Kyushu University Academic Staff Educational and Research Activities Database
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Junji Hyodo Last modified date:2023.10.02

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Academic Degree
Doctor (Engineering)
Country of degree conferring institution (Overseas)
Field of Specialization
Applied Chemistry, Materials Science and Engineering, Solid State Ionics
Total Priod of education and research career in the foreign country
Research Interests
  • Accelerated Development of Novel Proton Conductive Ceramics Using Experimental Data and Machine Learning
    keyword : Proton-conductive ceramics, machine learning, thermogravimetric analysis, electrochemical measurement
  • 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
  • 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
  • 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
  • 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)
  • 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
Academic Activities
1. J. Hyodo, Y. Yamazaki*, Quantitative Evaluation of Biaxial Compressive Strain and its Impact on Proton Conduction and Diffusion in Yttrium-doped Barium Zirconate Epitaxial Thin Films, J. Phys.: Energy, 10.1088/2515-7655/ac889e, 4, 4, 044003-1-044003-16, 2022.09.
2. J. Hyodo, K. Tsujikawa, M. Shiga, Y. Okuyama, Y. Yamazaki, Accelerated Discovery of Proton-Conducting Perovskite Oxide by Capturing Physicochemical Fundamentals of Hydration, ACS Energy Lett., 10.1021/acsenergylett.1c0 1239, 6, 2985-2992, 2021.08.
3. J. Hyodo, S. Kato, S. Ida, T. Ishihara, Y. Okuyama*, T. Sakai*, Determination of Oxide Ion Conductivity in Ba-Doped LaYbO3 Proton-Conducting Perovskites via an Oxygen Isotope Exchange Method, J. Phys. Chem. C, 10.1021/acs.jpcc.0c09591, 125, 3, 1703-1713, 2021.01.
4. J. Hyodo, K. Kitabayashi, K. Hoshino, Y. Okuyama, Y. Yamazaki*, Fast and stable proton conduction in heavily scandium-doped polycrystalline barium zirconate at intermediate temperatures, Adv. Energy Mater., 10.1002/aenm.202000213, 10, 25, 2000213, 2020.05.
5. S. Nishioka†, J. Hyodo†, J.J.M. Vequizo, S. Yamashita, H. Kumagai, K. Kimoto, A. Yamakata, Y. Yamazaki*, K. Maeda*, Homogeneous Electron Doping into Nonstoichiometric Strontium Titanate Improves Its Photocatalytic Activity for Hydrogen and Oxygen Evolution, ACS Catal., 10.1021/acscatal.8b01379, 8, 7190-7200, 2018.06.
6. J. Hyodo*, K. Tominaga, S. Ida, T. Ishihara, Effects of Three-Dimensional Mechano-Chemical Tensile Strain on Fast Oxygen Diffusion in Au-DispersedPr1.90Ni0.71Cu0.24Ga0.05O4+δ, J. Mater. Chem. A, 10.1039/C5TA08029K, 4, 10, 3844-3849, 2016.02.
7. J. Hyodo, K. Tominaga, Y.-W. Ju, S. Ida, T. Ishihara, Electrical conductivity and oxygen diffusivity in Cu- and Ga-doped Pr2NiO4, Solid State Ionics, 10.1016/j.ssi.2013.12.036, 256, 5-10, 2014.03.
Membership in Academic Society
  • The Electrochemical Society of Japan
  • The Solid State Ionics Society of Japan
  • The Japan Institute of Metals and Materials
  • The Japan Society of Mechanical Engineering