Faculty Profiles - HYODO JUNJI

Information

写真a

HYODO JUNJI

Organization

International Institute for Carbon-Neutral Energy Research Advanced Energy Materials Thrust Associate Professor
Graduate School of Integrated Frontier Sciences Department of Automotive Science（Concurrent）
Faculty of Engineering Department of Applied Chemistry（Concurrent）
School of Engineering （Concurrent）

Contact information

Profile

The target of the Hyodo group is to develop ceramic materials that conduct hydrogen ions and electrons and to realize proton-conductive ceramic fuel cells (PCFCs) that can operate in the medium temperature range of 200-400 °C. In order to realize a carbon-neutral society by 2050, fuel cells that can extract electrical energy from hydrogen without emitting CO2 are attracting attention. Fuel cells that can extract electrical energy from hydrogen without emitting CO2 are attracting attention. However, as the fuel cells currently in practical use are expensive, there is an urgent need to reduce material and maintenance costs through medium-temperature operation and to widely spread inexpensive fuel cells in society. To meet this demand, the Hyodo Group is developing new solid electrolyte and electrode materials that enable operation at 200-400°C and high-performance fuel cell devices using these materials. In these developments, the Hyodo Group aims to develop these materials in a rational and efficient manner, taking the basic knowledge gained from electrochemical measurements and advanced analytical methods using X-rays, electron beams, infrared rays, and ion beams, and applying it to applications.

Homepage

https://orcid.org/0000-0001-5700-5791
ORCID
https://researchmap.jp/hyodo.j?lang=en
researchmap
https://sites.google.com/view/cesd-hyodogroup
研究室HP

External link

Research Areas

Nanotechnology/Materials / Structural materials and functional materials
Nanotechnology/Materials / Structural materials and functional materials
Nanotechnology/Materials / Inorganic materials and properties

Degree

Doctor (Engineering) （ 2014.3 Kyushu University ）

Research History

Kyushu University International Institute for Carbon-Neutral Energy Research Advanced Energy Materials Thrust Associate Professor

2023.7 - Present
Kyushu University International Institute for Carbon-Neutral Energy Research (I2CNER) Associate Professor

2023.7 - Present

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Kyushu University Kyushu University Platform of Inter-/Transdisciplinary Energy Research (Q-PIT) Specially Appointed Assistant Professor

2022.4 - 2023.6
Kyushu University Kyushu University Platform for Inter-/Transdisciplinary Energy Research Research Assistant Professor

2021.4 - 2023.6

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Kyushu University INAMORI Frontier Research Center Specially Appointed Assistant Professor

2015.7 - 2022.3
Kyushu University Department of Applied Chemistry, Faculty of Engineering Specially Appointed Assistant Professor

2014.4 - 2015.6

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Education

Kyushu University Faculty of Engineering Department of Applied Chemistry

2009.4 - 2014.3

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Country：Japan
Kyushu University Faculty of Engineering Department of Applied Chemistry

2005.4 - 2009.3

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Country：Japan

Research Interests・Research Keywords

Research theme：酸化物イオン伝導体

Keyword：酸化物イオン伝導体

Research period： 2025
Research theme：固体酸化物形燃料電池

Keyword：固体酸化物形燃料電池

Research period： 2025
Research theme：機械学習

Keyword：機械学習

Research period： 2025
Research theme：プロトン伝導体

Keyword：プロトン伝導体

Research period： 2025
Research theme： Accelerated Development of Novel Proton Conductive Ceramics Using Experimental Data and Machine Learning

Keyword： Proton-conductive ceramics, machine learning, thermogravimetric analysis, electrochemical measurement

Research period： 2018.10
Research theme： Control of Photocatalytic Properties and Identification of Rate Determining Step by Controlling Lattice Defect Concentration

Keyword： Photocatalyst, Strontium titanate, Lattice defect, Fermi level, Band alignment

Research period： 2015.7 - 2020.3
Research theme： Relationship between Lattice Strain and Proton Conduction Properties at Hetero-interfaces of Proton Conducting Ceramics

Keyword： Proton-conducting ceramics, Lattice mismatch, Lattice strain, Proton diffusivity, Secondary ion mass spectrometry (SIMS), Fuel cells

Research period： 2015.7
Research theme： Role of lattice strain toward the oxide ion diffusivity in Pr2NiO4-based oxides

Keyword： Lattice strain, Mixed-ion-electron conducting oxides, Oxide ion diffusivity, Secondary ion mass spectrometry

Research period： 2012.4 - 2015.6
Research theme： Fabrication of oxide ionic conductor nano-film and evaluation of its oxide ionic conductivity

Keyword： Pulsed laser deposition method, Strain effects, Isotope oxygen exchange method, Secondary ion mass spectrometry (SIMS)

Research period： 2009.4
Research theme： Fabrication of thin film of proton conducting oxide with slurry coating method

Keyword： Proton conducting oxides, Solid oxide fuel cells, thin film, slurry coating method

Research period： 2008.4 - 2009.3

Awards

Tagawa Prize in 2022

2023.3 固体化学の新しい指針を探る研究会高速プロトン伝導性ペロブスカイト創製を志向した材料探索空間の拡張

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未来分子システム科学リサーチプロポーザル賞

2012.2 九州大学グローバルCOEプログラム

Papers

Emerging computational and machine learning methodologies for proton-conducting oxides: materials discovery and fundamental understanding

Susumu Fujii, Junji Hyodo, Kazuki Shitara, Akihide Kuwabara, Shusuke Kasamatsu, Yoshihiro Yamazaki

Science and Technology of Advanced Materials 25 ( 1 ) 2416383 2024.12 （ ISSN:1468-6996 eISSN:1878-5514 ）

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Language：English Publishing type：Research paper (scientific journal) Publisher：Science and Technology of Advanced Materials

This review presents computational and machine learning methodologies developed during a 5-year research project on proton-conducting oxides. The main goal was to develop methodologies that could assist in materials discovery or provide new insights into complex proton-conducting oxides. Through these methodologies, three new proton-conducting oxides, including both perovskite and non-perovskites, have been discovered. In terms of gaining insights, octahedral tilt/distortions and oxygen affinity are found to play a critical role in determining proton diffusivities and conductivities in doped barium zirconates. Replica exchange Monte Carlo approach has enabled to reveal realistic defect configurations, hydration behavior, and their temperature dependence in oxides. Our approach ‘Materials discovery through interpretation’, which integrates new insights or tendencies obtained from computations and experiments to sequential explorations of materials, has also identified perovskites that exhibit proton conductivity exceeding 0.01 S/cm and high chemical stability at 300 (Formula presented.) C.

DOI： 10.1080/14686996.2024.2416383

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Quantitative Evaluation of Biaxial Compressive Strain and its Impact on Proton Conduction and Diffusion in Yttrium-doped Barium Zirconate Epitaxial Thin Films Invited Reviewed International journal

@J. Hyodo, @Y. Yamazaki*

J. Phys.: Energy 4 ( 4 ) 044003-1 - 044003-16 2022.9 （ ISSN:2515-7655 eISSN:2515-7655 ）

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Language：English Publishing type：Research paper (scientific journal) Publisher：IOP Publishing

Abstract

Proton-conducting oxides, including 20 mol% yttrium-doped BaZrO3 (BZY20), have attracted considerable attention as electrolytes for environmentally friendly electrochemical cells, such as proton ceramic fuel cells (PCFCs) and proton-conducting solid oxide cells. These oxides exhibit fast proton conduction due to the complex physicochemical phenomena of hydration, chemical lattice expansion, proton migration, proton trapping, and local distortion. Using a proton-conducting oxide as an electrolyte film in electrochemical devices introduces an interface, which thermally and chemically generates mechanical strain. Here, we briefly review the current state of research into proton-conducting oxides in bulk samples and films used in electrochemical devices. We fabricated 18 and 500 nm thick 20 mol% BZY20 epitaxial films on (001) Nb-doped SrTiO3 single-crystal substrates to form a model interface between proton-conductive and non-proton-conductive materials, using pulsed laser deposition, and quantified the mechanical strain, proton concentration, proton conductivity, and diffusivity using thin-film x-ray diffractometry, thermogravimetry, secondary ion mass spectrometry, and AC impedance spectroscopy. Compressive strains of −2.1% and −0.85% were measured for the 18 and 500 nm thick films, respectively, and these strains reduced both the proton conduction and diffusion by five and one orders of magnitude, respectively, at 375 °C. Analysis based on a simple trapping model revealed that the decrease in proton conduction results from the slower diffusion of mobile protons with a negligible change in the proton trapping contribution. The model shows that the high ohmic resistance reported for a high-performance PCFC with a power density of 740 mW cm−2 at 600 °C can be solely explained by the estimated compressive strain in the cells. This study shows that minimizing biaxial compressive strain by appropriate choices of the electrolyte–electrode combination and fabrication process is important for maximizing the performance of electrochemical cells.

DOI： 10.1088/2515-7655/ac889e

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Other Link： https://iopscience.iop.org/article/10.1088/2515-7655/ac889e/pdf
Accelerated Discovery of Proton-Conducting Perovskite Oxide by Capturing Physicochemical Fundamentals of Hydration Reviewed International journal

@J. Hyodo,# K. Tsujikawa, M. Shiga, Y. Okuyama,@ Y. Yamazaki

ACS Energy Lett. 6 2985 - 2992 2021.8

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1021/acsenergylett.1c0 1239
Determination of Oxide Ion Conductivity in Ba-Doped LaYbO₃ Proton-Conducting Perovskites via an Oxygen Isotope Exchange Method Reviewed International journal

@J. Hyodo, S. Kato, S. Ida, T. Ishihara, Y. Okuyama*, T. Sakai*

J. Phys. Chem. C 125 ( 3 ) 1703 - 1713 2021.1

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1021/acs.jpcc.0c09591
Fast and stable proton conduction in heavily scandium-doped polycrystalline barium zirconate at intermediate temperatures Reviewed International journal

J. Hyodo, K. Kitabayashi, K. Hoshino, Y. Okuyama, Y. Yamazaki*

Adv. Energy Mater. 10 ( 25 ) 2000213 2020.5

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1002/aenm.202000213
Frontiers in Materials Discovery for Hydrogen Ion Conductors

HYODO Junji, FUKAMI Kazuhiro

Denki Kagaku 93 ( 2 ) 80 - 81 2025.6 （ ISSN:24333255 eISSN:24333263 ）

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Language：Japanese Publisher：The Electrochemical Society of Japan



DOI： 10.5796/denkikagaku.25-fe0209

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Frontiers in Electrochemistry Promoted by Digital Transformation

OGAWA Takaya, HYODO Junji

Denki Kagaku 93 ( 1 ) 3 - 4 2025.3 （ ISSN:24333255 eISSN:24333263 ）

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Language：Japanese Publisher：The Electrochemical Society of Japan



DOI： 10.5796/denkikagaku.25-fe0105

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Negative Activation Volume in Hydrated BaZr0.8Y0.2O3−δ Proton Conductor at Room Temperature

IGUCHI Fumitada, OOISHI Syota, OOKURA Kazuki, HYODO Junji, YAMAZAKI Yoshihiro

Electrochemistry 93 ( 2 ) 027016 - 027016 2025.2 （ ISSN:13443542 eISSN:21862451 ）

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Language：English Publishing type：Research paper (scientific journal) Publisher：The Electrochemical Society of Japan

To numerically evaluate the effect of residual stress on the performance of proton-conducting ceramic fuel cells (PCFCs), in this study, the impedance of a hydrated 20 mol% yttrium-doped barium zirconate (BZY20) proton conductor is measured under isostatic pressures up to 180 MPa near room temperature. A piston cylinder apparatus is used, with boron nitride (BN) powder as the pressure medium. The bulk resistance of the material decreases as the pressure increases, with a decrement ratio from −0.6 to −2.3 % per 60 MPa variation in pressure. As the proton concentration is constant at this temperature, this finding indicates that the proton conductivity and proton diffusivity increases under compressive stress. For various solid electrolytes, including other BZYs, this is the first experimental observation of an increase in diffusivity under compressive stress. The BZY20 exhibits an activation volume, the index describing the effect of pressure effect on ionic conductivity, in the range of −0.23–0.99 cm3 mol−1. To date, negative activation volumes have not been reported. However, their absolute values, that is, the sensitivities to pressure, are smaller than those of other solid electrolytes. In particular, BZY10 powder and BZY20 thin film exhibit significantly high positive activation volumes in the range of 4.0–14.3 cm3 mol−1 at higher temperatures and pressures. As the activation volume is determined by the dominant mechanism of ionic conduction, these results suggest that the dominant mechanism changes with temperature and pressure. This study reports the first instance of negative activation volume, which provides fundamental knowledge for evaluating the effects of stress near room temperature and low pressure. However, the impact of the negative activation volume for the performance of PCFCs is may be limited to a specific temperature and pressure ranges.

DOI： 10.5796/electrochemistry.24-00124

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Transforming carbon dioxide into high-value chemicals via sustainable solid oxide electrochemical reactor

Nai Shi, Xueyu Hu, Yun Xie, Shaowei Zhang, Junji Hyodo, Kang Zhu, Zongping Shao, Yoshihiro Yamazaki

2024.12

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DOI： 10.26434/chemrxiv-2024-0ps6q

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Quantitative assessment of enhanced performance of Ru-loaded direct ammonia proton ceramic fuel cells

Kitabayashi K., Hyodo J., Shi N., Yamazaki Y.

Solid State Ionics 417 2024.12 （ ISSN:01672738 eISSN:1872-7689 ）

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Publisher：Solid State Ionics

Liquid ammonia is an attractive candidate for use as a hydrogen carrier because of its high volumetric density. The successful development of direct ammonia proton-conducting ceramic fuel cells (PCFCs) operating at intermediate temperatures can be seamlessly integrated into the current infrastructure without the need for investing in hydrogen gas pipelines and storage facilities. However, the low power output of PCFCs using ammonia fuel hinders their practical applications. In this study, we systematically investigated the ammonia conversion ratio and rate, maximum power density, open-circuit voltage, and ohmic and polarization resistances of PCFCs (Ni-BaCe0.7Zr0.1Y0.1Yb0.1O3−δ |BaCe0.7Zr0.1Y0.1Yb0.1O3−δ| PrBaCo2O5+δ) for ammonia and hydrogen fuels at intermediate temperatures of 500–650 °C and quantitatively assessed the impact of Ru catalyst loading on the electrochemical performance of direct ammonia PCFC. Ru loading improved the maximum power density of the direct ammonia PCFC from 100 to 149 mWcm−2 at 500 °C. Combined analysis of gas chromatography and AC impedance spectroscopy revealed that Ru catalysts improved the internal ammonia reforming rate by a factor of 1.9 at 500 °C and reduced polarization resistance by a factor of 1.4 at 500 °C. All results consistently support that the enhanced maximum power density of the direct ammonia PCFC is predominantly attributed to the improved electrochemical reaction kinetics at the electrode/electrolyte/gas interface.

DOI： 10.1016/j.ssi.2024.116701

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Investigation of Water Impacts on Surface Properties and Performance of Air‐Electrode in Reversible Protonic Ceramic Cells

Nai Shi, Kang Zhu, Yun Xie, Daoming Huan, Junji Hyodo, Yoshihiro Yamazaki

Small 20 ( 36 ) e2400501 2024.5 （ ISSN:1613-6810 eISSN:1613-6829 ）

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Water, being abundant and readily accessible, gains widespread usage as proton source in many catalysis and energy conversion technologies, including applications like reversible protonic ceramic cells (R-PCCs). Revealing the influence of water on the electrode surface and reaction kinetics is critical for further improving their electrochemical performance. Herein, a hydrophilic air-electrode PrBa0.875Cs0.125Co2O5+δ is developed for R-PCC, which demonstrates a remarkable peak power density of 1058 mW cm−2 in fuel cell mode and a current density of 1354 mA cm−2 under 1.3 V in electrolyzing steam at 650 °C. For the first time on R-PCC, surface protons' behavior in response to external voltages is captured using in situ FTIR characterizations. Further, it is shown that contrary to the bulk proton uptake process that is thought to follow hydrogenation reactions and lead to cation reductions. The air-electrode presents enriched surface protons occurring through oxidizing surface cations, as confirmed by depth-profiling XPS results. H/D isotope exchange experiments and subsequent electrochemical characterization analyses reveal that the presence of protons enhances surface reactions. This study fills the knowledge gap between water-containing atmospheres and electrochemical performance by providing insights into the surface properties of the material. These new findings provide guidance for future electrode design and optimization.

DOI： 10.1002/smll.202400501

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Investigation of Water Impacts on Surface Properties and Performance of Air-Electrode in Reversible Protonic Ceramic Cells Reviewed International coauthorship

Hyodo Junji

Small in press 2024

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Discovery of unconventional proton-conducting inorganic solids via defect-chemistry-trained, interpretable machine learning Reviewed International journal

@S. Fujii, #Y. Shimizu, @J. Hyodo, @A. Kuwabara*, @Y. Yamazaki*

Adv. Energy Mater. 2301892 ( 39 ) 1 - 9 2023.9 （ ISSN:1614-6832 eISSN:1614-6840 ）

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Language：English Publishing type：Research paper (scientific journal) Publisher：Wiley

Abstract

High‐throughput computational screening and machine learning hold significant potential for exploring diverse chemical compositions and discovering novel inorganic solids. However, the complexity of point defects, which occur in all inorganic solids and are often crucial to their functionality and synthesizability, presents significant challenges. Here, this study presents a defect‐chemistry‐trained, interpretable machine learning approach, designed to accelerate the exploration and discovery of unconventional proton‐conducting inorganic solid electrolytes. By considering dopant dissolution and hydration reactions, the machine learning models provide quantitative predictions and physical interpretations for synthesizable host–dopant combinations with hydration capabilities across various structures. Utilizing these insights, two unconventional proton conductors, Pb‐doped Bi12SiO20 sillenite and eulytite‐type Sr‐doped Bi4Ge3O12, are discovered in the first two synthesis trials. Notably, the Pb‐doped Bi12SiO20 represents an unprecedented class of proton‐conducting electrolyte composed solely of groups 14 and 15 cations and featuring a sillenite structure. It exhibits unique and fast 3D proton conduction along a loosely bonded BiO5 network. This study demonstrates an efficient approach for exploring novel inorganic materials.

DOI： 10.1002/aenm.202301892

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AI Models for Accelerating New Proton-Conducting Electrolytes and Electrochemical Devices Developments

YAMAZAKI Yoshihiro, HYODO Junji

Denki Kagaku 91 ( 2 ) 178 - 182 2023.6 （ ISSN:24333255 eISSN:24333263 ）

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Language：Japanese Publisher：The Electrochemical Society of Japan



DOI： 10.5796/denkikagaku.23-fe0015

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Probing Local Environments of Oxygen Vacancies Responsible for Hydration in Sc-Doped Barium Zirconates at Elevated Temperatures: In Situ X-ray Absorption Spectroscopy, Thermogravimetry, and Active Learning Ab Initio Replica Exchange Monte Carlo Simulations Reviewed International journal

#K. Hoshino, @S. Kasamatsu, @J. Hyodo, @K. Yamamoto, @H. Setoyama, @T. Okajima, @Y. Yamazaki*

Chem. Mater. 35 ( 6 ) 2289 - 2301 2023.3 （ ISSN:0897-4756 eISSN:1520-5002 ）

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：American Chemical Society (ACS)

Proton-conducting oxides, specifically heavily Sc-doped barium zirconate perovskite, have attracted attention as electrolytes for intermediate-temperature protonic ceramic fuel cells because of their high proton conductivity and high chemical stability against carbon dioxide in that temperature regime. Hydration is a key reaction for incorporating protons by filling oxygen vacancies, VO, with hydroxyl groups and activating proton conduction in the perovskite. However, probing the local environment of oxygen vacancies responsible for hydration is challenging because the behavior depends on the temperature and water partial pressure, which necessitates in situ observations and calculations of the local environments at elevated temperatures. To obtain such information, we combined in situ X-ray absorption spectroscopy (XAS) for both the Sc and Zr K-edges, thermogravimetry, X-ray diffractometry, and active learning ab initio replica exchange Monte Carlo (RXMC) simulations in undoped and 20-40 at % Sc-doped barium zirconates at and below 800 °C. The presence of oxygen vacancies adjacent to Sc and Zr in the dehydrated samples and the hydration of these oxygen vacancies under a wet atmosphere were probed by in situ XAS for Sc and Zr pre-edges at elevated temperatures. Here, the microscopic hydration linearly responds to the macroscopic degree of hydration. RXMC sampling further supports the presence of Sc-VO-Zr and Sc-VO-Sc environments. An initial hydration occurs in the Sc-VO-Zr environment at and above 600 °C, but the Sc-VO-Sc environment contribution is greater at higher degrees of hydration. The Zr-Vo-Zr environment is the least abundant among them for the whole temperature range examined and thus has a negligible impact.

DOI： 10.1021/acs.chemmater.2c02116

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機械学習を用いたペロブスカイト酸化物におけるプロトン濃度の予測精度の評価 Invited Reviewed

#辻川皓太、@兵頭潤次、志賀元紀、奥山勇治、@山崎仁丈*

燃料電池 20 75 - 86 2021.5

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Non-linear behavior for chemical expansion in yttrium-doped barium zirconate upon hydration Reviewed International journal

K. Hoshino, J. Hyodo, Y. Yamazaki*

Chem. Lett. 50 ( 5 ) 899 - 902 2021.1

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DOI： 10.1246/cl.200942
Determination of Oxide Ion Conductivity in Ba-Doped LaYbO₃ Proton-Conducting Perovskites via an Oxygen Isotope Exchange Method Reviewed International journal

J. Hyodo, S. Kato, S. Ida, T. Ishihara, Y. Okuyama*, T. Sakai*

J. Phys. Chem. C 125 ( 3 ) 1703 - 1713 2021.1

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1021/acs.jpcc.0c09591
Water vapor reduces the effect of Cl-poisoning on CO oxidation over Pt/CeO₂ heterogeneous catalysts Reviewed International journal

Y. Uchiyama, J. Hyodo, Y. Yamazaki*

Chem. Lett. 50 ( 5 ) 888 - 891 2021.1

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1246/cl.200835
Oxygen affinity: the missing link enabling prediction of proton conductivities in doped barium zirconates Reviewed International journal

Y. Yamazaki*, A. Kuwabara, J. Hyodo, Y. Okuyama, C.A.J. Fisher, S.M. Haile

Chem. Mater. 32 ( 17 ) 7292 - 7300 2020.7

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1021/acs.chemmater.0c01869
Crucial impact of reduction on the photocarriers dynamics on SrTiO₃ powders studied by transient absorption spectroscopy Reviewed International journal

J.J.M. Vequizo, S. Nishioka, J. Hyodo, Y. Yamazaki, K. Maeda*, A. Yamakata*

J. Mater. Chem. A 7 ( 45 ) 26139 - 26146 2019.10

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1039/C9TA08216F
Defect Density-Dependent Electron Injection from Excited-State Ru(II) Tris-Diimine Complexes into Defect-Controlled Oxide Semiconductors Reviewed International journal

S. Nishioka, Y. Yamazaki, M. Okazaki, K. Sekizawa, G. Sahara, R. Murakoshi, D. Saito, R. Kuriki, T. Oshima, J. Hyodo, Y. Yamazaki, O. Ishitani, T.E. Mallouk, K. Maeda*

J. Phys. Chem. C 123 28310 - 28318 2019.10

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1021/acs.jpcc.9b09781
Bolometric ferromagnetic resonance techniques for characterising spin-Hall effect at high temperatures Reviewed International journal

P. Phu, K. Yamanoi*, K. Ohnishi, J. Hyodo, K. Rogdakis, Y. Yamazaki, T. Kimura, H. Kurebayashi

J. Magn. Magn. Mater. 485 304 - 307 2019.9

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DOI： 10.1016/j.jmmm.2019.04.070
Homogeneous Electron Doping into Nonstoichiometric Strontium Titanate Improves Its Photocatalytic Activity for Hydrogen and Oxygen Evolution Reviewed International journal

S. Nishioka†, J. Hyodo†, J.J.M. Vequizo, S. Yamashita, H. Kumagai, K. Kimoto, A. Yamakata, Y. Yamazaki*, K. Maeda*

ACS Catal. 8 7190 - 7200 2018.6

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DOI： 10.1021/acscatal.8b01379
Investigation of LnBa_0.5Sr_0.5Co_1.5Fe_0.5O_5+δ (Ln = Pr, Sm, Gd) in terms of structural, electrical, and electrochemical characteristics as an IT-SOFC cathode material Reviewed International journal

D. Jeong, A. Jun, Y.-W. Ju, J. Hyodo, J. Shin, T. Ishihara, T.-H. Lim, G. Kim

Energy Technol. 5 1337 - 1343 2017.8

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DOI： 10.1002/ente.201600618
Evaluation of isotope-diffusion coefficient and surface exchange coefficient of ScSZ series oxide by oxygen isotope exchange method Reviewed International journal

T. Sakai*, J. Hyodo*, A. Inoishi, M. Ohgushi, S. Ida, T. Ishihara

Solid State Ionics 301 156 - 162 2017.2

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DOI： 10.1016/j.ssi.2017.02.002
Boron deposition and poisoning of La_0.8Sr_0.2MnO₃oxygen electrodes of solid oxide electrolysis cells under accelerated operation conditions Reviewed International journal

K. Chen, J. Hyodo, N. Ai, T. Ishihara, S. P. Jian

Int. J. Hydrog. Energy 41 ( 3 ) 1419 - 1431 2016.3

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1016/j.ijhydene.2015.11.013
Effects of Pt dispersion on electronic and oxide ionic conductivity in Pr_1.90Ni_0.71Cu_0.24Ga_0.05O₄ Reviewed International journal

T. Ishihara, J. Hyodo, H. Schraknepper, K. Tominaga, S. Ida

Phys. Chem. Chem. Phys. 18 ( 16 ) 11125 - 11131 2016.3

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1039/C5CP07192E
Effects of Three-Dimensional Mechano-Chemical Tensile Strain on Fast Oxygen Diffusion in Au-DispersedPr_1.90Ni_0.71Cu_0.24Ga_0.05O_4+δ Reviewed International journal

J. Hyodo*, K. Tominaga, S. Ida, T. Ishihara

J. Mater. Chem. A 4 ( 10 ) 3844 - 3849 2016.2

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1039/C5TA08029K
Robust symmetrical electrode with layered perovskite structure for direct hydrocarbon solid oxide fuel cells: PrBa_0.8Ca_0.2Mn₂O_5+δ Reviewed International journal

A. Jun, S. Yoo, Y.-W. Ju, J. Hyodo, S. Choi, H.Y. Jeong, J. Shin, T. Ishihara, T.-H. Lim, G. Kim

J. Mater. Chem. A 4 ( 5 ) 1747 - 1753 2016.1

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DOI： 10.1039/C5TA08878J
Correlation between fast oxygen kinetics and enanced performance in Fe doped layered perovskite cathodes for solid oxide fuel cells Reviewed International journal

A. Jun, S. Yoo, Y.-W. Ju, J. Hyodo, S. Choi, H.Y. Jeong, J. Shin, T. Ishihara, T.-H. Lim, G. Kim

J. Mater. Chem. A 3 ( 29 ) 15082 - 15090 2015.6

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DOI： 10.1039/C5TA02158H
Low temperature operation of solid-oxide Fe-air rechargeable battery using a La_0.9Sr_0.1Ga_0.8Mg_0.2O₃ oxide ion conductor” Reviewed International journal

A. Inoishi, J. Hyodo, H. Kim, T. Sakai, S. Ida, T. Ishihara

J. Mater. Chem. A 3 ( 16 ) 8260 - 8264 2015.5

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1039/c4ta06780k
Ruddlesden Popper oxides of LnSr₃Fe₃O_10-δ (Ln = La, Pr, Nd, Sm, Eu and Gd) as active cathodes for low temperature solid oxide fuel cells Reviewed International journal

S.Chaianansutcharit, K. Hosoi, J. Hyodo, Y.-W. Ju, T. Ishihara

J. Mater. Chem. A 3 ( 23 ) 12357 - 12366 2015.5

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1039/C5TA01273B
Chromium deposition and poisoning of La_0.8Sr_0.2MnO₃ oxygen electrodes of solid oxide electrolysis cells Reviewed International journal

K. Chen, J. Hyodo, Dodd, N. Ai, T. Ishihara, L. Jian, S. P. Jian

Faraday Discuss. 182 457 - 476 2015.3

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1039/C5FD00010F
A dense La(Sr)Fe(Mn)O_3-δ Nano-film Anode for Intermediate-Temperature Solid Oxide Fuel Cells Reviewed International journal

Y. W. Ju, J. Hyodo, A. Inoishi, S. Ida, T. Ishihara

J. Mater. Chem. A 3 3586 - 3593 2015.2

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DOI： 10.1039/C4TA05664G
Effects of Three-Dimensional Strain on Electric Conductivity in Au-Dispersed Pr_1.90Ni_0.71Cu_0.24Ga_0.05O_4+δ Reviewed International journal

J. Hyodo, K. Tominaga, J.-E. Hong, S. Ida, T. Ishihara

J. Phys. Chem. C. 119 ( 1 ) 5 - 13 2015.1

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DOI： 10.1021/jp504220y
Double Columnar Structure with Nano-gradient Composite for Increased Oxygen Diffusivity and Reduction Activity Reviewed International journal

Y.-W. Ju, J. Hyodo, A. Inoishi, S. Ida, T. Tohei, Y.-G. So, Y. Ikuhara, T. Ishihara

Adv. Energy Mater. 4 ( 17 ) 1400783 2014.12

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1002/aenm.201400783
Ce(Mn,Fe)O₂ dense film deposited on LaGaO₃ electrolyte for dense anode of solid oxide fuel cells Reviewed International journal

Y.-W. Ju, J. Hyodo, A. Inoishi, S. Ida, T. Ishihara

Int. J. Hydrog. Energy 35 ( 3 ) 20777 - 20782 2014.12

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DOI： 10.1016/j.ijhydene.2014.06.115
Oxide ionic conductivity in Pr₂(Ni,Cu,Ga)O_4+δ-(Ce,Sm)O_2-δ laminated film estimated with Hebb-Wagner method Reviewed International journal

J. Hyodo, S. Ida, T. Ishihara

Solid State Ionics 262 889 - 892 2014.9

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1016/j.ssi.2013.12.040
Development of Double-Perovskite Compounds as Cathode Materials for Low-Temperature Solid Oxide Fuel Cells Reviewed International journal

S. Yoo, A. Jun, Y.-W. Ju, D. Odknuu, J. Hyodo, H. Y. Jeong, N. Park, J. Shin, T. Ishihara, G. Kim

Angew. Chem. Int. Ed. 53 13064 - 13067 2014.9

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DOI： 10.1002/ange.201407006
Surface segregation and poisoning in materials for low-temperature SOFCs Invited Reviewed International journal

J. Druce, H. Tellez, J. Hyodo

MRS Bull. 39 ( 9 ) 810 - 815 2014.8

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1557/mrs.2014.170
Effect of Voltile Boron Species on the Electrocatalytic Activity of Cathodes of Solid Oxide Fuel Cells; III. Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ Electrodes Reviewed International journal

K. Chen, J. Hyodo, K. M. O’Donnell, W. Rickard, T. Ishihara, S. P. Jiang

J. Electrochem. Soc. 161 ( 12 ) F1163 - F1170 2014.8

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1149/2.0251412jes
Increased oxide ion diffusivity and surface exchange on Pr₂NiO₄ base oxide by Au dispersion Reviewed International journal

J. Hyodo, K. Tominaga, Y.-W. Ju, S. Ida, T. Ishihara

ECS Trans. 61 ( 1 ) 123 - 129 2014.5

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Language：English Publishing type：Research paper (international conference proceedings)

DOI： 10.1149/06101.0123ecst
Electrical conductivity and oxygen diffusivity in Cu- and Ga-doped Pr₂NiO₄ Reviewed International journal

J. Hyodo, K. Tominaga, Y.-W. Ju, S. Ida, T. Ishihara

Solid State Ionics 256 5 - 10 2014.3

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1016/j.ssi.2013.12.036
Boron Poisoning of (La,Sr)(Co,Fe)O₃ Cathodes of Solid Oxide Fuel Cells Reviewed International journal

K. Chen, J. Hyodo, L. Zhao, N. Ai, T. Ishihara, S.P. Jiang

ECS Trans. 57 ( 1 ) 1821 - 1830 2013.12

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Language：English Publishing type：Research paper (international conference proceedings)

DOI： 10.1149/05701.1821ecst
Effect of volatile boron species on the microstructure and composition of La(Sr)MnO₃ and (La,Sr)(Co,Fe)O₃ cathode materials of solid oxide fuel cells Reviewed International journal

K. Chen, J. Hyodo, L. Zhao, N. Ai, T. Ishihara, S. P. Jiang

J. Electrochem. Soc. 160 ( 9 ) F1033 - F1039 2013.7

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1149/2.090309jes
Effect of boron deposition and poisoning on the surface exchange properties of LSCF electrode materials of solid oxide fuel cells Reviewed International journal

L. Zhao, J. Hyodo, K. Chen, N. Ai, S. Amarasinghe, T. Ishihara, S. P. Jiang

J. Electrochem. Soc. 160 ( 6 ) F682 - F686 2013.4

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1149/2.131306jes
XRD and Raman spectroscopy study of Fe solubility in cerium oxide Reviewed International journal

L. Zhao, J. Hyodo, S. R. Bishop, T. Ishihara, K. Sasaki

ECS Trans. 50 ( 40 ) 53 - 58 2013.1

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Language：English Publishing type：Research paper (international conference proceedings)

DOI： 10.1149/05040.0053ecst
Electronic and oxide ion conductivity in Pr₂Ni_0.71Cu_0.24Ga_0.05O₄/Ce_0.8Sm_0.2O₂ laminated film Reviewed International journal

J. Hyodo, S. Ida, J. A. Kilner, T. Ishihara*

Solid State Ionics 230 16 - 20 2013.1

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DOI： 10.1016/j.ssi.2012.10.018
Single-nanosize pulverization of solid oxide by means of a wet planetary-bead-milling Reviewed International journal

T. Sakai, J. Hyodo, T. Ishihara, H. Matsumoto

J.Ceram. Soc. Jpn. 120 ( 1397 ) 39 - 42 2012.10

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DOI： 10.2109/jcersj2.120.39
Improved oxide ionic conductivity in Pr₂Ni_0.75Cu_0.25Ga_0.05O_4+δ/Ce_0.8Sm_0.2O_1.9 layer by layer film Reviewed International journal

J. Hyodo, H. Hagiwara, T. Ishihara

Proceedings of the 13th Asian Conference on Solid State Ionics 340 - 349 2012.8

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Language：English Publishing type：Research paper (international conference proceedings)

DOI： 10.1142/9789814415040_0040
New buffer layer material La(Pr)CrO₃ for intermediate temperature solid oxide fuel cell using LaGaO₃-base electrolyte film Reviewed International journal

Y.-W. Ju, J. Hyodo, J.-E. Hong, T. Inagaki, S. Ida, T. Ishihara

J. Mater. Res. 27 ( 15 ) 1906 - 1914 2012.8

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Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1557/jmr.2012.187
Effect of doped ceria interlayer on cathode performance of the electrochemical cell using proton conducting oxide Reviewed International journal

T. Sakai, J. Hyodo, S. Matsushita, Y. Okuyama, M. Matsuka, T. Ishihara, H. Matsumoto

Electrochim. Acta 75 179 - 184 2012.7

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DOI： 10.1016/j.electacta.2012.04.102
Improved electrical conductivity in Pr₂Ni(Cu,Ga)O₄ film with nano thickness Reviewed International journal

T. Ishihara, K. Tominaga, J. Hyodo, M. Matsuka

Int. J. Hydrog. Energy 37 8066 - 8072 2012.5

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DOI： 10.1016/j.ijhydene.2011.12.026
Synthesis and photocatalitic activity of rhodium-doped calcium nitrate nanosheets for hydrogen production from a water/methanol system without cocatalyst loading Reviewed International journal

Y. Okamoto, S. Ida, J. Hyodo, H. Hagiwara, T. Ishihara

J. Am. Chem. Soc. 133 ( 45 ) 18034 - 18037 2011.10

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Language：Japanese Publishing type：Research paper (scientific journal)

DOI： 10.1021/ja207103j
High sinterability of planetary-bead-milled barium zirconate Reviewed

T. Sakai, H. Matsumoto, Y. Sato, J. Hyodo, N. Ito, S. Hashimoto, T. Ishihara

Electrochemistry 77 ( 10 ) 876 - 878 2009.10

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DOI： 10.5796/electrochemistry.77.876

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Books

酸素イオン伝導体のナノ薄膜化と低温作動型固体酸化物電解質燃料電池の開発

石原達己, 朱容完, 兵頭潤次（Role：Joint author）

株式会社シーエムシー出版 2020.5

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Language：Japanese Book type：Scholarly book
次世代燃料電池開発の最前線《普及版》（第Ⅱ編, 第2章酸素イオン伝導体のナノ薄膜化と低温作動型固体酸化物電解質燃料電池の開発）

石原達己, 朱容完, 兵頭潤次（Role：Joint author）

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Presentations

High Proton Conductivity and Chemical Stability in Heavily Scandium-Doped Barium Zirconate (HSBZ) International conference

J. Hyodo, K. Kitabayashi, K. Hoshino, Y. Okuyama, Y. Yamazaki

The 20th international conference on Solid-State proton conductor (SSPC-20) 2021.9

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Language：English Presentation type：Oral presentation (general)

Venue：Fukuoka Country：Japan
高速プロトン伝導性ペロブスカイトの開拓 Invited

兵頭潤次

第16回固体イオニクスセミナー 2022.8

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Language：Japanese Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
高速プロトン伝導性ペロブスカイト創製を志向した材料探索空間の拡張” (受賞記念講演 Invited

兵頭潤次

第90回電気化学大会 2023.3

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Language：Japanese Presentation type：Oral presentation (general)

Venue：仙台 Country：Japan
Discovery of Fast and Stable Proton-Conducting Perovskite Oxides at 300 oC International conference

J. Hyodo, K. Tsujikawa, Y. Yamazaki

The 21st International Conference on Solid-State Protonic Conductors (SSPC-21) 2023.9

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Language：English Presentation type：Oral presentation (general)

Venue：Fukuoka Country：Japan
Accelerated discovery of novel proton-conducting ceramics utilizing experimental data and machine learning Invited International conference

Junji Hyodo

3RD CEMDI-PAIMS SYMPOSIUM 2025.4

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Event date： 2025.4

Language：English Presentation type：Oral presentation (invited, special)

Country：Japan
鉄置換チタン酸ストロンチウムのp/n型制御と光酸素発生活性への影響

兵頭潤次、江原駿太、伊田進太郎、山崎仁丈

電気化学会第92回大会 2025.3

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Event date： 2025.3

Language：Japanese Presentation type：Oral presentation (general)
Development of Fast Proton-Conducting Ceramics at 300 C Invited International conference

Junji Hyodo

2025 I2CNER Annual Symposium 2025.1

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Event date： 2025.1

Language：English Presentation type：Oral presentation (invited, special)

Country：Japan
Development of novel proton conducting ceramics and application to fuel cells Invited International conference

Junji Hyodo

Belt and Road International Conference on Solid Oxide Fuel Cells & Electrolysis Cells 2024.12

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Event date： 2024.12

Language：English Presentation type：Oral presentation (invited, special)
トリプル伝導体PrBa0.5Sr0.5Co1.5Fe0.5O5+δ(PBSCF)における格⼦⽋陥濃度の定量

兵頭潤次，Keerti M. Naik，山崎仁丈

第50回固体イオニクス討論会 2024.12

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Event date： 2024.12

Language：Japanese Presentation type：Oral presentation (general)
電極過電圧分離可能なアノード⽀持型固体酸化物形燃料電池の構築

舩崎隆史郎, 兵頭潤次, ⼭崎仁丈

第50回固体イオニクス討論会 2024.12

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Event date： 2024.12

Language：Japanese Presentation type：Oral presentation (general)
KドープPBSCFのキャリア濃度の温度依存性

後藤希, ⼭崎仁丈, 兵頭潤次

第50回固体イオニクス討論会 2024.12

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Event date： 2024.12

Language：Japanese Presentation type：Oral presentation (general)
300Cにおける高速プロトン伝導性セラミックスの開発 Invited

兵頭潤次

2024年度九州支部秋季研究発表会 2024.12 日本セラミックス協会九州支部

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Event date： 2024.12

Language：Japanese Presentation type：Oral presentation (invited, special)
Development of Hydrogen-Ion-Conducting Solids for Next-Generation Fuel Cells Invited International conference

Junji Hyodo

NEDO-GNS Science 2nd Workshop 2024.11

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Event date： 2024.11

Language：English Presentation type：Oral presentation (invited, special)
Discovery of unconventional proton-conducting oxides: computational screening and interpretable machine learning based on defect chemistry

Susumu Fujii, Yuta Shimizu, Kota Tsujikawa, Junji Hyodo, Akihide Kuwabara, Yoshihiro Yamazaki

The Fourteenth International Conference on the Science and Technology for Advanced Ceramics (STAC14) 2024.10

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Event date： 2024.10

Language：English Presentation type：Oral presentation (general)

Country：Japan
300C動作燃料電池を志向した高速プロトン伝導性電解質材料の開発 Invited

兵頭潤次

トークシャワー・イン・九州2024 2024.9

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Event date： 2024.9

Language：Japanese Presentation type：Oral presentation (invited, special)
欠陥化学計算と機械学習による非従来型プロトン伝導性酸化物の発見

藤井進、清水雄太、辻川皓太、兵頭潤次、山崎仁丈、桑原彰秀

第18回固体イオニクスセミナー 2024.9

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Event date： 2024.9

Language：Japanese Presentation type：Poster presentation
構造―機能マップを活用した能動的材料探索促進システムの開発

辻川皓太、藤井進、兵頭潤次、奥山勇治、山崎仁丈

第18回固体イオニクスセミナー 2024.9

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Event date： 2024.9

Language：Japanese Presentation type：Poster presentation
機械学習を用いた5元系ペロブスカイトカソード材料の探索

兵頭潤次

FCDIC第31回燃料電池シンポジウム 2024.5

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Event date： 2024.5

Language：Japanese Presentation type：Poster presentation

Venue：東京 Country：Japan
Determination of Proton Concentrationin Triple-conducting PrBaCo1.5Fe0.5O5+d(PBSCF) Invited

Junji Hyodo

Retreat 2025 2024.2

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Event date： 2024.2

Language：English Presentation type：Oral presentation (invited, special)
Improved Oxide Ion Conductivity In Pr2Ni0.75Cu0.25Ga0.05O4+d-Sm0.2Ce0.8O1.9 (PNCG-SDC) Laminated Film International conference

J. Hyodo, T. Ishihara

The 13th Asian Conference on Solid State Ionics 2012.7

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Language：English Presentation type：Oral presentation (general)

Venue：Sendai Country：Japan
Improved Oxide Ion Conductivity In Pr2Ni0.75Cu0.25Ga0.05O4+d-Sm0.2Ce0.8O2-d (PNCG-SDC) Laminated Film International conference

J. Hyodo, S. Ida, T. Ishihara

The 62nd International Society of Electrochemistry annual symposium 2012.9

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Language：English Presentation type：Oral presentation (general)

Venue：Niigata Country：Japan
Electric Conductivity in Cu- and Ga-Doped Pr2NiO4 Nano Film Laminated with Sm-Doped CeO2 International conference

J. Hyodo, T. Ishihara

ECS PRiME 2012 2012.10

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Language：English Presentation type：Oral presentation (general)

Venue：Hawaii
Electric Conductivity in Cu- and Ga-Doped Pr2NiO4 Nano Film Laminated with Sm-Doped CeO2 International conference

J. Hyodo, S. Ida, T. Ishihara

MRS fall meeting & Exhibition 2012 2012.11

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Language：English Presentation type：Oral presentation (general)

Venue：Boston
Oxide Ionic Conductivity in Cu- and Ga- doped Pr2NiO4 laminated with Sm-doped CeO2 Invited International conference

T. Ishihara, J. Hyodo

The 19th international conference on Solid-State ionics 2013.6

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Language：English Presentation type：Oral presentation (general)

Venue：Kyoto Country：Japan
Effects of Local Strain on Oxide Ionic Conductivity in Cu- and Ga-doped Pr2NiO4+d Film Laminated on Sm-doped CeO2 International conference

J. Hyodo, S. Ida, T. Ishihara

The 10th Pacific Rim Conference on Ceramic and Glass Technology (PACRIM 10) 2013.6

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Language：English Presentation type：Oral presentation (general)

Venue：San Diego
Effect of Localized Strain on Oxide Ionic Diffusion in laminated film consisting of doped Pr2NiO4 and CeO2 International conference

J. Hyodo, S. Ida, T. Ishihara

MRS fall meeting & Exhibition 2014 2014.12

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Language：English Presentation type：Oral presentation (general)

Venue：Boston
Electrical and Oxide Ionic Conductivity in Metal Particles Dispersed Pr2NiO4-based Oxides International conference

J. Hyodo, J.-E. Hong, S. Ida, T. Ishihara

The 20th international conference on Solid-State ionics (SSI-20) 2015.6

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Language：English Presentation type：Oral presentation (general)

Venue：Keystone
Oxide Ion Conductivity of LaYbO3 type Proton Conducting Oxide Evaluated by Oxygen Isotope Exchange Method International conference

T. Sakai, J. Hyodo, S. Ida, T. Ishihara, Y. Okuyama

The 18th international conference on Solid-State proton conductor (SSPC-18) 2016.9

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Language：English Presentation type：Oral presentation (general)

Venue：Oslo Country：Norway
Photocatalytic Activity of Oxygen Deficient SrTiO3-δ Prepared by Reduced Atmosphere Calcination International conference

S. Nishioka, J. Hyodo, A. Yamakata, Y. Yamazaki, K. Maeda

The 16th Korea–Japan Symposium on Catalysis 2017.5

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Language：English Presentation type：Oral presentation (general)

Venue：Sapporo Country：Japan
Evaluation of Isotope Diffusion Coefficient and Surface Exchange Coefficient of Sc2O3 doped ZrO2 by 18O2 Exchange Method International conference

T. Sakai, J. Hyodo, M. Ogushi, A. Inoishi, S. Ida, and T. Ishihara

The 21st international conference on Solid-State Ionics (SSI-21) 2017.6

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Language：English Presentation type：Oral presentation (general)

Venue：Padua Country：Italy
Probing Oxygen Vacancies Responsible for BaZr0.8Sc0.2O3-δ Hydration by In-situ X-ray Absorption Spectroscopy International conference

K. Hoshino, K. Yamamoto, J. Hyodo, H. Setoyama, T. Okajima, Y. Yamazaki

The 21st international conference on Solid-State Ionics (SSI-21) 2017.6

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Language：English Presentation type：Oral presentation (general)

Venue：Padua Country：Italy
Thermochemical CO2 Reduction Reaction and Operando Analysis of Electronic Structure for La0.6Sr0.4MnO3-δ International conference

J. Hyodo, K. Yamamoto, K. Hoshino, H. Setoyama, T. Okajima, and Y. Yamazaki

The 21st international conference on Solid-State Ionics (SSI-21) 2017.6

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Language：English Presentation type：Oral presentation (general)

Venue：Padua Country：Italy
Rate-limiting Factor of Oxygen Evolution Reaction for Strontium Titanate Photocatalyst International conference

Y. Bando, J. Hyodo, Y. Yamazaki

5th Solid-state Chemistry & Ionics workshop 2018.9

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Language：English Presentation type：Symposium, workshop panel (public)

Venue：Fukuoka Country：Japan
Order parameter and symmetry breaking: impact on oxygen diffusivity in Mg-doped LaGaO3 International conference

Y. Tani, J. Hyodo, Y. Yamazaki

5th Solid-state Chemistry & Ionics workshop 2018.9

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Language：English Presentation type：Symposium, workshop panel (public)

Venue：Fukuoka Country：Japan
Active Hydration Site in Sc-doped Barium Zirconate International conference

K. Hoshino, J. Hyodo, K. Yamamoto , A. Kuwabara, H. Setoyama, T. Okajima, Y. Yamazaki

5th Solid-state Chemistry & Ionics workshop 2018.9

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Language：English Presentation type：Symposium, workshop panel (public)

Venue：Fukuoka Country：Japan
Outermost Surface Composition and Its Impacts on Oxygen Exchange Kinetics of La1-xSrxMn1-yAlyO3-d Thin Film for Solar Thermochemical Fuel Production International conference

J. Hyodo, J.K. Kim, Y.J. Kim, W.C. Jung, Y. Yamazaki

The 22nd International Conference on Solid State Ionics (SSI-22) 2019.6

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Language：English Presentation type：Oral presentation (general)

Venue：PyeongChang Country：Korea, Republic of
Prediction of I-V Characteristic for Solid Oxide Fuel Cells via Machine Learning International conference

T. Yamashita, J. Hyodo, Y. Yamazaki

The 22nd International Conference on Solid State Ionics (SSI-22) 2019.6

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Language：English Presentation type：Oral presentation (general)

Venue：PyeongChang Country：Korea, Republic of
Photocatalytic Oxygen Evolution Reaction Using n- and p-type Fe-doped Strontium Titanates International conference

S. Ehara, J. Hyodo, Y. Yamazaki

The 22nd International Conference on Solid State Ionics (SSI-22) 2019.6

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Language：English Presentation type：Oral presentation (general)

Venue：PyeongChang Country：Korea, Republic of
Role of water Molecules for CO oxidation Rate over Pt-loaded CeO2 Catalyst International conference

Y. Uchiyama, J. Hyodo, Y. Yamazaki

The 22nd International Conference on Solid State Ionics (SSI-22) 2019.6

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Language：English Presentation type：Oral presentation (general)

Venue：PyeongChang Country：Korea, Republic of
Oxide Ion Diffusion in LaGa0.8Mg0.2O3-δ Thin Film International conference

M. Kuroiwa, J. Hyodo, Y. Yamazaki

The 22nd International Conference on Solid State Ionics (SSI-22) 2019.6

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Language：English Presentation type：Oral presentation (general)

Venue：PyeongChang Country：Korea, Republic of
Diffusion behavior of proton in fully hydrated Y-doped BaZrO3 International conference

J. Hyodo, Y. Okuyama, Y. Yamazaki

The 22nd International Conference on Solid State Ionics (SSI-22) 2019.6

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Language：English Presentation type：Oral presentation (general)

Venue：PyeongChang Country：Korea, Republic of
Prediction of proton concentration in virtual compositions by machine learning International conference

K. Tsujikawa, M. Shiga, J. Hyodo, K. Hoshino, Y. Yamazaki, Y. Okuyama

The 13th Pacific Rim Conference of Ceramics Societies (PACRIM 13) 2019.10

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Language：English Presentation type：Oral presentation (general)

Venue：Okinawa Country：Japan
Heavy Sc doping and its impact on proton-dopant association in barium zirconate International conference

K. Kitabayashi, J. Hyodo, Y. Okuyama, Y. Yamazaki

The 13th Pacific Rim Conference of Ceramics Societies (PACRIM 13) 2019.10

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Language：English Presentation type：Oral presentation (general)

Venue：Okinawa Country：Japan
Machine learning and ab initio calculations for proton-conducting oxides International conference

Y. Yamazaki, J. Hyodo, K. Tsujikawa, Y. Okuyama, M. Shiga, A. Kuwabara

Materials Research Meeting 2019 2019.12

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Language：English Presentation type：Oral presentation (general)

Venue：Yokohama Country：Japan
イットリウム添加ジルコン酸バリウム薄膜に導入した面内圧縮ひずみがプロトン伝導性に及ぼす影響 Invited

兵頭潤次, 山崎仁丈

M&M2021材料力学カンファレンス 2021.9

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Language：Japanese Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
実験データと機械学習を活用した新規プロトン伝導性酸化物の加速的探索 Invited

兵頭潤次

第79回固体イオニクス研究会 2021.11

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Language：Japanese Presentation type：Oral presentation (general)

Venue：オンライン Country：Japan
First principles statistical thermodynamics of dopant configurations and hydration behavior in Sc-doped BaZrO3 International conference

S. Kasamatsu, A. Kuwabara, K. Hoshino, J. Hyodo, Y. Yamazaki

Material Research Meeting 2021 (MRM2021) 2021.12

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Language：English Presentation type：Oral presentation (general)

Venue：Yokohama Country：Japan
電解質－電極界面を模擬したY添加BaZrO3エピタキシャル薄膜におけるプロトン伝導特性 Invited

兵頭潤次

第29回燃料電池シンポジウム 2022.5

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Language：Japanese Presentation type：Oral presentation (general)

Venue：東京 Country：Japan
Dopant Configurations and Hydration Behavior in Heavily Sc-doped BaZrO3 from Machine-Learning Assisted First-Principles Statical Thermodynamics International conference

S. Kasamatsu, A. Kuwabara, K. Hoshino, J. Hyodo, Y. Yamazaki

The 23rd international conference on Solid State Ionics (SSI-23) 2022.7

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Language：English Presentation type：Oral presentation (general)

Venue：Boston
機械学習と実験データとを活用したエネルギー材料開発の加速 Invited

兵頭潤次

令和4年度第1回駒場材料学セミナー 2022.12

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Language：Japanese Presentation type：Oral presentation (general)

Venue：東京 Country：Japan
ハイスループット第一原理計算による非従来型プロトン伝導性酸化物の探索

藤井進, 清水雄太, 兵頭潤次, 山崎仁丈, 桑原彰秀

公益社団法人日本セラミックス協会第36回秋季シンポジウム 2023.9

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Language：Japanese Presentation type：Oral presentation (general)

Venue：京都 Country：Japan
アノード支持型PCFCの電極過電圧評価

舩﨑隆史郎、山崎仁丈、兵頭潤次

2023電気化学秋季大会 2023.9

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Language：Japanese Presentation type：Oral presentation (general)

Venue：福岡 Country：Japan
Lu、Ni共置換ジルコン酸バリウムにおけるNi溶出誘起高速プロトン伝導と燃料電池アノードへの適用

笹川陽矢、奥山勇治、Nai Shi、井口英明、関谷優希、山内孝祐、見神祐一、黒羽智宏、兵頭潤次、山崎仁丈

2023電気化学秋季大会 2023.9

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Language：Japanese Presentation type：Oral presentation (general)

Venue：福岡 Country：Japan
Ru触媒によるアンモニア燃料型プロトン伝導性燃料電池出力の向上

北林康喜、Nai Shi、山本亮平、宮脇亜紀、兵頭潤次、寺西真哉、山崎仁丈

2023電気化学秋季大会 2023.9

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Language：Japanese Presentation type：Oral presentation (general)

Venue：福岡 Country：Japan
SrSn0.8Sc0.2O3-δにおける水和反応誘起構造相転移

兵頭潤次, 藤井進, 山崎仁丈

2023電気化学秋季大会 2023.9

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Language：Japanese Presentation type：Oral presentation (general)

Venue：福岡 Country：Japan
Efficient Exploration of Heavily Scandium-Doped Proton-Conducting Ceramics: An Active Machine Learning Approach International conference

K. Tsuru, K. Tsujikawa, J. Hyodo, Y. Yamazaki

The 21st International Conference on Solid-State Protonic Conductors (SSPC-21) 2023.9

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Language：English Presentation type：Oral presentation (general)

Venue：Fukuoka Country：Japan
Ni Exsolution-Induced Fast Proton Conduction in Lu and Ni Co-Doped Barium Zirconate and its Application to Fuel Cell Anodes International conference

Y. Sasakawa, Y. Okuyama, N. Shi, H. Iguchi, Y. Sekitani, K. Yamauchi, Y. Mikami, T. Kuroha, J. Hyodo, Y. Yamazaki

The 21st International Conference on Solid-State Protonic Conductors (SSPC-21) 2023.9

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Language：English Presentation type：Oral presentation (general)

Venue：Fukuoka Country：Japan
Discovery of Fast and Stable Proton-Conducting Perovskite Oxides at 300°C: a descriptor optimization approach International conference

K. Tsujikawa, J. Hyodo, K. Kitabayashi, S. Fujii, K. Takahashi, S. Kasamatsu, Y.Yamazaki

The 21st International Conference on Solid-State Protonic Conductors (SSPC-21) 2023.9

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Language：English Presentation type：Oral presentation (general)

Venue：Fukuoka Country：Japan
Hydration-active sites in heavily Sc-doped BaZrO3 from first-principles statistical thermodynamics accelerated by machine learning International conference

S. Kasamatsu, J. Hyodo, Y. Yamazaki

The 21st International Conference on Solid-State Protonic Conductors (SSPC-21) 2023.9

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Language：English Presentation type：Oral presentation (general)

Venue：Fukuoka Country：Japan
Ru Catalysts Boost Ammonia-based Protonic Ceramics Fuel Cell Performance at Intermediate Temperature International conference

K. Kitabayashi, S. Nai, R. Yamamoto, A. Miyawaki, J. Hyodo, S. Teranishi, Y. Yamazaki

The 21st International Conference on Solid-State Protonic Conductors (SSPC-21) 2023.9

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Language：English Presentation type：Oral presentation (general)

Venue：Fukuoka Country：Japan
Cathode Polarization Resistance: A Quantitative Analysis in Anode-support Proton-Conducting Ceramics Fuel Cells International conference

R. Funasaki, J. Hyodo, Y. Yamazaki

The 21st International Conference on Solid-State Protonic Conductors (SSPC-21) 2023.9

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Language：English Presentation type：Oral presentation (general)

Venue：Fukuoka Country：Japan
Defect-Chemistry-Trained Machine Learning for Rapid Discovery of Unconventional Proton-Conducting Oxides International conference

S. Fujii, Y. Shimizu, J. Hyodo, A. Kuwabara, Y. Yamazaki

The 21st International Conference on Solid-State Protonic Conductors (SSPC-21) 2023.9

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Language：English Presentation type：Oral presentation (general)

Venue：Fukuoka Country：Japan
Enhanced performance of proton ceramic fuel cells: tailoring surface cations in double perovskite International conference

S. Nai, K. Zhu, J. Hyodo, Y. Xie, Yu. Yamazaki, S. Kasamatsu, R. Peng, Y. Liu, Yo. Yamazaki

The 21st International Conference on Solid-State Protonic Conductors (SSPC-21) 2023.9

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Language：English Presentation type：Oral presentation (general)

Venue：Fukuoka Country：Japan
3価カチオン添加ジルコン酸バリウム中のプロトン拡散のドーパント濃度依存性

設樂一希、桑原彰秀、奥山勇治, 兵頭潤次, ⼭崎仁丈

第33回日本MRS年次大会 2023.11

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Language：Japanese Presentation type：Oral presentation (general)

Venue：横浜 Country：Japan
⾼濃度Sc置換プロトン伝導性酸化物におけるSnの効果

辻川皓太、藤井進、兵頭潤次、⼭崎仁丈

第49回固体イオニクス討論会 2023.11

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Language：Japanese Presentation type：Oral presentation (general)

Venue：札幌 Country：Japan
アノード⽀持型プロトンセラミック燃料電池における電極過電圧分離

舩﨑隆史郎、⼭崎仁丈、兵頭潤次

第49回固体イオニクス討論会 2023.11

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Language：Japanese Presentation type：Oral presentation (general)

Venue：札幌 Country：Japan
高濃度Sc置換ジルコン酸バリウムにおけるプロトン拡散のＳｃ濃度依存性

兵頭潤次, 設樂一希北林康喜, 桑原彰秀，山崎仁丈

第49回固体イオニクス討論会 2023.11

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Language：Japanese Presentation type：Oral presentation (general)

Venue：札幌 Country：Japan
⽋陥化学を解釈可能な機械学習モデルの構築と⾮ペロブスカイト型プロトン伝導体の発⾒

藤井進、清⽔雄太、兵頭潤次、桑原彰秀、⼭崎仁丈

第49回固体イオニクス討論会 2023.11

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Language：Japanese Presentation type：Oral presentation (general)

Venue：札幌 Country：Japan
Development of Novel Materials Toward Carbon-Neutrality

Junji Hyodo

FY2023 WPI Academy Site Visit 2023.12

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Language：English

Venue：Fukuoka Country：Japan
Heavily Sc-doped Perovskite Oxides: Materials Design Strategy for Fast Proton Conductors Invited

Junji Hyodo

Institute Interest Seminar Series（IISS） 2024.1

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Language：English Presentation type：Oral presentation (general)

Venue：Fukuoka Country：Japan
長距離プロトン拡散に寄与する局所構造の抽出と高速拡散の起源解明 Invited

兵頭潤次

数理・データサイエンスに関する教育・研究支援プログラム　研究成果発表会 2024.1

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Language：Japanese Presentation type：Oral presentation (general)

Venue：福岡 Country：Japan
Development of Novel Functional Ceramics for Contributing Carbon-Neutrality Invited

Junji Hyodo

CESD Workshop 2024.2

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Language：English Presentation type：Symposium, workshop panel (public)

Venue：Fukuoka Country：Japan
Fast Proton Diffusion in Heavily Sc-doped Perovskite Oxides Invited

Junji Hyodo

Retreat 2024 2024.2

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Language：English Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：Saga Country：Japan
等方圧がペロブスカイト型プロトン導電体の導電率に与える影響

大石翔太, 大倉一輝, 兵頭潤次, 山崎仁丈, 井口史匡

機械学会東北支部第59期総会・講演会 2024.3

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Language：Japanese Presentation type：Oral presentation (general)

Venue：仙台 Country：Japan
実験データと機械学習を活用した新規プロトン伝導性酸化物の開発 Invited

兵頭潤次

北海道大学研究セミナー 2024.4

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Language：Japanese Presentation type：Public lecture, seminar, tutorial, course, or other speech

Venue：札幌 Country：Japan

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MISC

小規模実験データと機械学習を活用した新規プロトン伝導性酸化物開発の加速：物理化学的知見の導入と新規材料選定戦略

@兵頭潤次, @山崎仁丈*

FCレポート 2022.7

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Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal)
機械学習を用いたプロトン伝導性酸化物の効率的探索

兵頭潤次、山崎仁丈*

セラミックス 2020.10

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Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal)
機械学習を用いたプロトン伝導性酸化物の加速的開発

兵頭潤次、山崎仁丈*

燃料電池 2020.7

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Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal)
プロトン伝導性セラミックス燃料電池（PCFC）の界面を考慮した電解質設計指針：格子ひずみ抑制による高速プロトン伝導特性の維持

兵頭潤次*, 山崎仁丈

燃料電池 2023.10

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Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal)
新規プロトン伝導性電解質・電気化学デバイスの加速的開発AI

@山崎仁丈*, @兵頭潤次

電気化学 2023.6

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Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal)

DOI： 10.5796/denkikagaku.23-FE0015
新規プロトン伝導性電解質・電気化学デバイスの加速的開発AI Invited

山崎仁丈, 兵頭潤次

2023

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researchmap
小規模実験データと機械学習を活用した新規プロトン伝導性酸化物開発の加速：物理化学的知見の導入と新規材料選定戦略 Invited

兵頭潤次, 山崎仁丈

FCレポート 40/3 102 - 106 2022

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Authorship：Lead author Language：Japanese

researchmap
ペロブスカイト類縁化合物Pr₂NiO₄における酸素イオン伝導と燃料電池への応用

石原達己, 兵頭潤次

セラミックデータブック2013/14 2013.12

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Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal)
新規酸素イオン伝導体のナノ薄膜を用いる超低温作動型SOFC

石原達己, 朱容完, 兵頭潤次

ケミカルエンジニヤリング 2010.10

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Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal)

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Industrial property rights

Patent	Number of applications: 1	Number of registrations: 0
Utility model	Number of applications: 0	Number of registrations: 0
Design	Number of applications: 0	Number of registrations: 0
Trademark	Number of applications: 0	Number of registrations: 0

Professional Memberships

The Electrochemical Society of Japan

2010.2 - Present
The Solid State Ionics Society of Japan
The Japan Institute of Metals and Materials
The Ceramics Society of Japan

2024.8 - Present
The Japan Society of Mechanical Engineering
日本機械学会

2021 - Present

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日本金属学会

2015 - Present

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日本固体イオニクス学会

2015 - Present

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電気化学会

2009 - Present

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Committee Memberships

The Ceramics Society of Japan セラミックス協会秋季シンポジウム・セッションオーガナイザー Domestic

2024.9 - Present

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Committee type：Academic society
The Electrochemical Society of Japan 電気化学編集委員会 Domestic

2024.4 - Present

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Committee type：Academic society

Academic Activities

学術論文等の審査

Role(s)： Peer review

2025

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Type：Peer review

Number of peer-reviewed articles in foreign language journals：7
学術論文等の審査

Role(s)： Peer review

2024

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Type：Peer review

Number of peer-reviewed articles in foreign language journals：27

Number of peer-reviewed articles in Japanese journals：1
Screening of academic papers

Role(s)： Peer review

2023

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Type：Peer review

Number of peer-reviewed articles in foreign language journals：9
Screening of academic papers

Role(s)： Peer review

2022

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Type：Peer review

Number of peer-reviewed articles in foreign language journals：9
Screening of academic papers

Role(s)： Peer review

2021

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Type：Peer review

Number of peer-reviewed articles in foreign language journals：7
Screening of academic papers

Role(s)： Peer review

2020

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Type：Peer review

Number of peer-reviewed articles in foreign language journals：7
Screening of academic papers

Role(s)： Peer review

2019

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Type：Peer review

Number of peer-reviewed articles in foreign language journals：5
Screening of academic papers

Role(s)： Peer review

2018

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Type：Peer review

Number of peer-reviewed articles in foreign language journals：4
Screening of academic papers

Role(s)： Peer review

2017

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Type：Peer review

Number of peer-reviewed articles in foreign language journals：4
座長

日本金属学会2016年春季講演大会（ Japan ） 2016.3 - Present

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Type：Competition, symposium, etc.
Screening of academic papers

Role(s)： Peer review

2016

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Type：Peer review

Number of peer-reviewed articles in foreign language journals：4
座長

第11回固体イオニクスセミナー（ Japan ） 2015.8 - Present

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Type：Competition, symposium, etc.
Screening of academic papers

Role(s)： Peer review

2015

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Type：Peer review

Number of peer-reviewed articles in foreign language journals：1

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Research Projects

New Theory for Activationg Proton Conduction by Hydration-Induced Structural Phase Transition

Grant number：24K08081 2024 - 2026

Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

兵頭潤次

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Authorship：Principal investigator Grant type：Scientific research funding

本研究では、Bサイトホスト元素がp、d、fと異なるブロック元素で構成される斜方晶ペロブスカイトSrSnO3、SrZrO3、SrCeO3を対象とし、Bサイトの一部をScで置換した材料において、結晶構造、価電子帯電子構造、水和熱力学の3つの相関関係を高温X線回折、示差熱-熱重量同時測定（TG-DSC）、紫外光電子分光法(UPS)および密度汎関数法による理論計算により調査し、Bサイトにおける軌道対称性の違いが水和反応活性に影響を及ぼしていることを明らかにする。

CiNii Research
Development of Proton Conducting Oxide Electrolytes for Low Temperature Operation

Grant number：JPMJGX23H7 2023.10 - 2024.3

Japan Science and Technology Agency (JST) Green Technologies of Excellence (Gtex)

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Authorship：Coinvestigator(s) Grant type：Contract research
長距離プロトン拡散に寄与する局所構造の抽出と高速拡散の起源解明

2023

数理・データサイエンスに関する教育・研究支援プログラム

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Authorship：Principal investigator Grant type：On-campus funds, funds, etc.
オペランド観測による高速プロトン伝導性酸化物を用いたCO2還元反応場の解明

2021.4 - 2024.3

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Authorship：Principal investigator
Examination of CO2 reduction reaction sites using fast proton-conducting oxides via operando observations

Grant number：21H01654 2021 - 2023

Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

Hyodo Junji

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Authorship：Principal investigator Grant type：Scientific research funding

This study reveals that in electrochemical CO2 reduction using a membrane-type reactor with a proton-conducting electrolyte, the rate of CO formation is suppressed and methanogenesis is promoted by applying a current in the direction of supplying protons to the catalyst. Operando infrared absorption spectrometry finds that this enhancement is due to the increased concentration of C-H intermediates. The development of a catalyst that reduces the overvoltage at the CO2 reduction electrode may improve the ion transport rate of the electrolyte, resulting in a further increase in the production rate.

CiNii Research
格子欠陥を用いた界面バンドエンジニアリングと光触媒の活性化

2019.4 - 2021.3

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Authorship：Principal investigator

科学研究費助成事業
磁気秩序が誘起する吸着分子秩序の解明と触媒反応

2019.4 - 2020.3

九州大学

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Authorship：Principal investigator
格子欠陥を用いた界面バンドエンジニアリングと光触媒の活性化

Grant number：19K15314 2019 - 2020

Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Early-Career Scientists

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Authorship：Principal investigator Grant type：Scientific research funding
磁気秩序が誘起する吸着分子秩序の解明と触媒反応

2019

2019年度QRプログラムわかばチャレンジ

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Authorship：Principal investigator Grant type：On-campus funds, funds, etc.
格子欠陥および金属接合を利用した界面バンドエンジニアリングによる水分解光触媒の高性能化

2018.4 - 2019.3

九州大学

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Authorship：Principal investigator
格子欠陥および金属接合を利用した界面バンドエンジニアリングによる水分解光触媒の高性能化

2018

H30年度エネルギー研究教育機構若手支援プログラム

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Authorship：Principal investigator Grant type：On-campus funds, funds, etc.
熱化学法によるCO2の資源化

2016.4 - 2017.3

九州大学

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Authorship：Principal investigator
熱化学法によるCO₂の資源化

2016

H28年度エネルギー研究教育機構若手支援プログラム

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Authorship：Principal investigator Grant type：On-campus funds, funds, etc.
異種材料界面における酸化物イオン交換特性評価法の開発

2015.4 - 2017.3

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Authorship：Principal investigator

科学研究費助成事業
異種材料界面における酸化物イオン交換特性評価と電極反応

Grant number：15K18214 2015 - 2016

Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)

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Authorship：Principal investigator Grant type：Scientific research funding

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Educational Activities

The department provides research, experimental guidance, and lectures on surface analysis and electrochemical measurement to undergraduate and graduate students in the Department of Applied Chemistry, Faculty of Engineering [Group II] Functional Materials Science Course. In addition, research guidance and lectures are provided to graduate students in the Department of Automotive Science of the Graduate School of Integrated Frontier Sciences.

Class subject

オートモーティブサイエンス演習IV

2024.10 - 2025.3 Second semester
オートモーティブサイエンス演習II

2024.10 - 2025.3 Second semester
Automotive Science Seminar 4

2024.10 - 2025.3 Second semester
Automotive Science Seminar 3

2024.10 - 2025.3 Second semester
Automotive Science Seminar 2

2024.10 - 2025.3 Second semester
Automotive Science Seminar 1

2024.10 - 2025.3 Second semester
Seminar Advanced Automotive Science1

2024.4 - 2025.3 Full year
オートモーティブサイエンス特別研究Ａ

2024.4 - 2025.3 Full year
オートモーティブサイエンス特別研究Ａ

2024.4 - 2025.3 Full year
インターンシップIV

2024.4 - 2025.3 Full year
インターンシップIII

2024.4 - 2025.3 Full year
インターンシップII

2024.4 - 2025.3 Full year
インターンシップI

2024.4 - 2025.3 Full year
インターンシップ

2024.4 - 2025.3 Full year
Seminar Advanced Automotive Science3

2024.4 - 2025.3 Full year
Seminar Advanced Automotive Science2

2024.4 - 2025.3 Full year
オートモーティブサイエンス演習III

2024.4 - 2024.9 First semester
オートモーティブサイエンス演習I

2024.4 - 2024.9 First semester
Automotive Science Seminar 4

2024.4 - 2024.9 First semester
Automotive Science Seminar 3

2024.4 - 2024.9 First semester
Automotive Science Seminar 2

2024.4 - 2024.9 First semester
Automotive Science Seminar 1

2024.4 - 2024.9 First semester

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Travel Abroad

2015.7 - 2015.8

Staying countory name 1：United States Staying institution name 1：San Jose State University