Kyushu University [NAKAJIMA Hironori (Assistant Professor) Faculty of Engineering, Department of Mechanical Engineering]

Keyword Search

Researcher information

NAKAJIMA Hironori
Assistant Professor
Hydrogen Utilization Engineering
Department of Mechanical Engineering
Faculty of Engineering
Last modified date：2024.06.03

Graduate School

Department of Hydrogen Energy Systems
Graduate School of Engineering

Undergraduate School

Department of Mechanical and Aerospace Engineering
School of Engineering

E-Mail

Homepage

Fax

Academic Degree

Country of degree conferring institution (Overseas)

Field of Specialization

ORCID(Open Researcher and Contributor ID)

Total Priod of education and research career in the foreign country

Research

Unauthorized reprint of the contents of this database is prohibited.

1.	Hironori NAKAJIMA, Mass Transfer -Advances in Sustainable Energy and Environment Oriented Numerical Modeling, Hironori Nakajima (Ed.), ISBN 978-953-51-1170-2, InTech, 2013.07, [URL].
2.	Hironori Nakajima, Editor, Mass Transfer - Advanced Aspects, Hironori Nakajima (Ed.), ISBN: 978-953-307-636-2 , InTech, 2011.11, [URL].

1.	Fast Fourier Transform Impedance Analysis of Cathode Slurry Mixing Conditions on Rapid Discharge Characteristics of Lithium Ion Batteries.
2.	Assessing Degradation of Marine Solid Oxide Fuel Cells Fed with Methane Fuel.
3.	Development of Tandem System with Low-temperature CO2 Methanation Catalyst and Water Electrolysis.
4.	Assessing Degradation of Marine Solid Oxide Fuel Cells Fed with Methane Fuel, Marine Engineering, 168-173, 2019, [URL].
5.	, [URL].
6.	In-situ Measurement of Current Distribution in the Solid Oxide Fuel Cell for Marine Power Applications, Marine Engineering, 53(2), 230-237, 2018, [URL].
7.	AC Impedance Method to Detect Abnormal Operational Conditions for Marine Polymer Electrolyte Fuel Cells, Journal of the Japan Institute of Marine Engineering, 53(2), 223-229，2018, [URL].
8.	Abnormal Diagnosis for Reliable and Durable Marine Solid Oxide Fuel Cells with Real-time Electrochemical Impedance Spectroscopy, Journal of the Japan Institute of Marine Engineering，51(6), 792-797, 2016, [URL].

1.	Xuefeng Wang, Hironori Nakajima, Yoshihiro Iwanaga, Kohei Ito, Numerical and experimental investigation of a cathode-supported microtubular solid oxide electrolysis cell from current and temperature variations in-situ assessed with electrode-segmentation method, Journal of Energy Storage, 10.1016/j.est.2023.108459, 72, 108459-108459, 2023.11.
2.	Hironori Nakajima, Shintaro Iwasaki, Tatsumi Kitahara, Pore network modeling of a microporous layer for polymer electrolyte fuel cells under wet conditions, Journal of Power Sources, 10.1016/j.jpowsour.2023.232677, 560, 232677-232677, 2023.03.
3.	Yingtian Chi, Kentaro Yokoo, Hironori Nakajima, Kohei Ito, Jin Lin, Yonghua Song, Optimizing the homogeneity and efficiency of a solid oxide electrolysis cell based on multiphysics simulation and data-driven surrogate model, Journal of Power Sources, 10.1016/j.jpowsour.2023.232760, 562, 232760-232760, 2023.02.
4.	Munekazu Motoyama, Makoto Ejiri, Hironori Nakajima, Yasutoshi Iriyama, Mechanical Failure of Cu Current Collector Films Affecting Li Plating/Stripping Cycles at Cu/LiPON Interfaces, Journal of The Electrochemical Society, 10.1149/1945-7111/aca79d, 170, 1, 012503-012503, 2023.01, Herein an electro-chemo-mechanical theory, which states that mechanical work to deform a Cu current collector (CC) film influences the nucleation overpotential (η_nc) for Li nucleation at the Cu CC film/lithium phosphorus oxynitride (LiPON) electrolyte interface, is examined. The finite element method (FEM) simulated the mechanical pressure that the CC film exerted on the Li nuclei at the Cu/LiPON interface, and the results agreed with the trends in our previous study. In situ scanning electron microscopy (SEM) observations for cycling of Li plating/stripping showed that Li repeatedly nucleated and grew at positions where the CC film was locally fractured, and η_nc decreased with repeated Li plating/stripping because the mechanical pressure to the Li nuclei was no longer applied at locations where the CC film was fractured. On the other hand, for thicker CC films that did not crack, η_nc exhibited nearly consistent values in the Li plating/stripping cycles. Consequently, the experimental results in this study supported our nucleation theory for a metal/solid-state-electrolyte interfacial system..
5.	Hironori NAKAJIMA, Asuka SHIMA, Mitsuhiro INOUE, Takayuki ABE, Hiroshige MATSUMOTO, Omar Samuel, MENDOZA-HERNANDEZ, Yoshitsugu SONE, Three-Dimensional Numerical Modeling of a Low-Temperature Sabatier Reactor for a Tandem System of CO2 Methanation and Polymer Electrolyte Membrane Water Electrolysis, Electrochemistry, 10.5796/electrochemistry.22-00035, 90, 6, 067008, 2022.06.
6.	Hironori NAKAJIMA, Veeramani VEDIYAPPAN, Hiroshige MATSUMOTO, Motohiko SATO, Omar Samuel MENDOZA-HERNANDEZ, Asuka SHIMA, Yoshitsugu SONE, Water Transport Analysis in a Polymer Electrolyte Electrolysis Cell Comprised of Gas/Liquid Separating Interdigitated Flow Fields（宇宙・地上用気液分離型水電解）, Electrochemistry, 10.5796/electrochemistry.21-00097, 90, 1, 017002, 2021.10, [URL], PEM水電解，ガス拡散層、撥水MPL、毛管圧、飽和度、微小重力，空気再生，有人宇宙探査，PEM water electrolyzer, GDL, Hydrophobic MPL, Capillary pressure, Saturation, Microgravity, Manned space mission, Closed-loop air revitalization.
7.	比嘉資, 中島裕典, Evaluation of Three-Dimensional Placement of Built-in Catalytic Partial Oxidation Catalyst in an Anode-Supported Honeycomb SOFC (Monolithic solid oxide fuel cell) アノード支持ハニカムSOFCにおける内蔵型マイクロ改質器の3次元配置評価（熱・燃料自立型燃料電池，小型，ポータブル，災害用）, ECS Transactions, 10.1149/10301.1991ecst, 103, 1, 1991-1996, 2021.07, [URL], Keywords: 燃料・熱自立型燃料電池，ポータブル電源，小型電源，災害用，非常用，メタン，ブタン，プロパン，カセットボンベ.
8.	Mitsuhiro Inoue, Motohiko Sato, Asuka Shima, Hironori Nakajima, Yoshitsugu Sone, Takayuki Abe, Practical Application Study of Highly Active CO2 Methanation Catalysts Prepared Using the Polygonal Barrel-Sputtering Method: Immobilization of Catalyst Particles, [URL].
9.	Yoshitsugu SONE, Omar Samuel HERNANDEZ-MENDOZA, Asuka SHIMA, Motohiko SATO, Hironori NAKAJIMA, Hiroshige MATSUMOTO, Water Electrolysis by the Direct Water Supply to the Solid Polymer Electrolyte through the Interdigitated Structure of the Electrode, Electrochemistry, 10.5796/electrochemistry.20-00145, 89, 2, 138-140, 2020.12, © The Author(s) 2020. Water electrolysis cell in which the product gases was separated from liquid water on the surface of the electrode was developed. In order to realize the separation between gas and water, interdigitated diffusion layer (GDL) was designed, and the surface of the GDL was covered by catalyst to form electrode. When the pressurized water was supplied, the water directly made a contact to the proton conductive membrane. Due to the hydrophobic surface condition of the GDLs, gas/water separation along the surface of the electrode was completed..
10.	Kohei Sasaki, Hironori Nakajima, Tatsumi Kitahara, Influence of carbon deposition on the current distribution in an anode-supported planar solid oxide fuel cell in-situ assessed by segmented electrodes, ECS Transactions, 10.1149/09101.0549ecst, 91, 1, 549-554, 2019.07, [URL], For solid oxide fuel cells (SOFCs), durability to carbon deposition is a common problem to use hydrocarbon fuels from the city gas and the biogas. Identification of degradation factors and locations leads to development of diagnosis method and optimized operation control for prevention of failure and accident. Electrochemical data by the degradation give useful parameters for health diagnosis. In this study, we are aiming to understand spatial degradation, so that we prepared an anode-supported planar cell in which the cathode layer was segmented to three parts. We fed dry methane gas to the anode as accelerated aging tests and measured the current distribution directly among the upstream, midstream and downstream parts along the anode flow channels. Electrochemical impedance spectroscopy analysis was carried out in each segment as well. Upstream part of the cell exhibited larger overpotentials with more enhanced carbon deposition than the other parts with the dry methane fuel..
11.	Impedance Diagnosis of Abnormal Operational Conditions to Enhance Reliability of Marine Fuel Cells, [URL].
12.	, [URL].
13.	Özgür Aydin, Hironori NAKAJIMA, Concentration Gradient of Reactants Extending from Reaction Sites Inward Inlet Periphery of Fuel Cells, Journal of the Electrochemical Society, 10.1149/2.0871805jes, 165, 5, F365-F374, 2018.06, [URL].
14.	Tatsumi Kitahara, Hironori Nakajima, Gas diffusion media and NaCl contamination of polymer electrolyte fuel cells for marine applications, ECS Transactions, 10.1149/08613.0271ecst, 271-279, 2018.07, [URL], The application of polymer electrolyte fuel cells (PEFCs) for marine vessels will be an effective means of reducing the environmental impact and solving energy crisis problems. The diagnosis of abnormal operational conditions is an important aspect of improving the reliability and durability of marine PEFCs, and helps to ensure long-term safe and stable operation. The present work investigates the effect of abnormal variations in the relative humidity of supplied gases on the resistance values in the equivalent circuit model using electrochemical impedance spectroscopy analysis. An appropriate microporous layer coated gas diffusion layer is evaluated to enhance the cell performance under both low and high humidity conditions. The effect of sea salt (NaCI) contamination in the cathode air on the cell performance is also evaluated. Injecting distilled water after the initial detection of performance degradation due to NaCI contamination is effective at recovering the cell performance..
15.	Hironori NAKAJIMA, Tatsumi Kitahara, Real-Time Electrochemical Impedance Spectroscopy Diagnosis of the Solid Oxide Fuel Cell for Marine Power Applications, Heat and Mass Transfer, 10.1007/s00231-017-2215-0, 54, 8, 2551-2558, in press, 2017.11, [URL].
16.	Hironori NAKAJIMA, Shunzaburo Murakami, Sou Ikeda, Tatsumi Kitahara, Three-dimensional flow channel arrangements in an anode-supported honeycomb solid oxide fuel cell (Monolithic SOFC), Heat and Mass Transfer, 10.1007/s00231-017-2154-9, 54, 8, 2545-2550, 2017.10, [URL].
17.	Tatsuhiro Ochiai, Hironori NAKAJIMA, Takahiro Karimata, Tatsumi Kitahara, Kohei Ito, Yusuke Ogura, In-Situ Analysis of the in-Plane Current Distribution Difference between Electrolyte-Supported and Anode-Supported Planar Solid Oxide Fuel Cells by Segmented Electrodes, ECS Transactions, 10.1149/07801.2203ecst, 78, 1, 2203-2209, 2017.07, [URL].
18.	Hironori NAKAJIMA, Akiko Inada, Tatsumi Kitahara, Yusaku Nagata, Impedance Spectra Associated with Metal Deposition at the Negative Electrode from Contaminating Metal Particles at the Positive Electrode in a Lithium Ion Battery, ECS Transactions, 10.1149/07523.0027ecst, 75, 23, 27-36, 2017.01, [URL], リチウムイオン電池，金属，ニッケル，銅，鉄，ステンレス，電析、析出，デンドライト、短絡，熱暴走，発火，インピーダンス分光法，診断，高速フーリエ変換，Metal, Ni, Cu, Fe, Stainless steel, Deposition, Dendrite, Short-circuiting, Thermal runaway, Electrochemical Impedance Spectroscopy, Fast Fourier transform, FFT, Safety.
19.	Hironori NAKAJIMA, Daeho LEE, Ming-Tsang LEE, Costas P. GRIGOROPOULOS, Hydrogen Production with CuO/ZnO Nanowire Catalyst for a Nanocatalytic Solar Thermal Steam-Methanol Reformer - 光熱変換材料，ナノワイヤ触媒，ナノロッド，水蒸気改質，水素生成, International Journal of Hydrogen Energy, 10.1016/j.ijhydene.2016.07.039, 41, 38, 16927-16931, 2016.08, [URL], 光熱変換材料，触媒，水蒸気改質，水素生成.
20.	Özgür Aydın, Hironori NAKAJIMA, Tatsumi Kitahara, Reliability of the numerical SOFC models for estimating the spatial current and temperature variations, International Journal of Hydrogen Energy, 10.1016/j.ijhydene.2016.06.194, 41, 34, 15311-15324, 2016.07, [URL].
21.	Özgür Aydın, Hironori NAKAJIMA, Tatsumi Kitahara, Processes Involving in the Temperature Variations in Solid Oxide Fuel Cells In-Situ Analyzed Through Electrode-Segmentation Method, Journal of the Electrochemical Society, 10.1149/2.0701603jes, 163, 3, F216-F224, 2015.12, [URL].
22.	Hironori NAKAJIMA, Tatsumi Kitahara, Diagnosis Method to Detect the Incorporation of Metallic Particles in a Lithium Ion Battery, ECS Transactions, 10.1149/06802.0059ecst, 68, 2, 59-74, 2015.12, [URL], リチウムイオン電池，ニッケル、銅、鉄、ステンレス、電析、デンドライト，短絡，熱暴走，発火，診断，インピーダンス分光法，サイクリックボルタンメトリー，Nickel, Copper, Iron, Stainless steel, Deposition, Dendrite, Short-circuiting, Thermal runaway, Safety, Electrochemical impedance spectroscopy, Cyclic voltammetry.
23.	Liqing He, LI Hai-Wen, Hironori NAKAJIMA, Nikolay Tumanov, Yaroslav Filinchuk, Son-Jong Hwang, Manish Sharma, Hans Hagemann, Etsuo Akiba, Synthesis of a Bimetallic Dodecaborate LiNaB12H12 with Outstanding Super Ionic Conductivity, Chemistry of Materials, 10.1021/acs.chemmater.5b01568, 27, 16, 5483-5486, 2015.08, [URL].
24.	Özgür Aydın, Hironori NAKAJIMA, Tatsumi Kitahara, Current and Temperature Distributions In-situ Acquired by Electrode-Segmentation Along a Microtubular Solid Oxide Fuel Cell Operating with Syngas, Journal of Power Sources, 10.1016/j.jpowsour.2015.06.024, 293, 1053-1061, 2015.06, [URL].
25.	Hironori NAKAJIMA, Tatsumi Kitahara, Yuta Higashinaka, Yusaku Nagata, Effect of Electrode Mixing Conditions on the Performance of Lithium-Ion Batteries Analyzed by Fast Fourier Transform Electrochemical Impedance Spectroscopy, ECS Transactions, 10.1149/06422.0087ecst, 64, 22, 87-95, 2015.05, [URL], リチウムイオン電池，合材電極、スラリー、導電助剤、アセチレンブラック、分散、ネットワーク、内部抵抗、電気化学インピーダンス分光法，高速フーリエ変換，Composite electrode, Slurry, Conductive material, Acetylene black, Dispersion, Network, Internal resistance, Electrochemical impedance spectroscopy, Fast Fourier transform, FFT.
26.	Özgür Aydın, Takahiro Koshiyama, Hironori NAKAJIMA, Tatsumi Kitahara, In-situ Diagnosis and Assessment of Longitudinal Current Variation by Electrode-Segmentation Method in Anode-Supported Microtubular Solid Oxide Fuel Cells, Journal of Power Sources, 10.1016/j.jpowsour.2014.12.156, 279, 218-223, 2015.01, [URL].
27.	Martin Andersson, Hironori NAKAJIMA, Tatsumi Kitahara, Akira Shimizu, Takahiro Koshiyama, Hedvig Paradis, Jinliang Yuan, Bengt Sunden, Comparison of Humidified Hydrogen and Partly Pre-Reformed Natural Gas as Fuel for Solid Oxide Fuel Cells applying Computational Fluid Dynamics, International Journal of Heat and Mass Transfer, 10.1016/j.ijheatmasstransfer.2014.06.033, 77, 1008-1022, 2014.10, [URL].
28.	Hironori NAKAJIMA, Tatsumi Kitahara, toshiaki konomi, Electrochemical Impedance Spectroscopy Analysis of an Anode-Supported Microtubular Solid Oxide Fuel Cell, Journal of the Electrochemical Society, 10.1149/1.3486805, 157, 11, B1686-B1692, 2010.09, [URL].
29.	Tatsumi KITAHARA, toshiaki konomi, Hironori NAKAJIMA, Microporous Layer Coated Gas Diffusion Layers for Enhanced Performance of Polymer Electrolyte Fuel Cells, Journal of Power Sources, 10.1016/j.jpowsour.2009.10.089, 195, 8, 2202-2211, 2010.04, [URL].
30.	Hironori Nakajima, Toshiaki Konomi, Tatsumi Kitahara, Thermal Analysis of a Microtubular Solid Oxide Fuel Cell Using Electrochemical Impedance Spectroscopy, ECS Transactions, 10.1149/1.3205544, 25, 2, 359-368, Volume 25 (2), pp. 359 - 368, 2009.12, [URL], Electrochemical Peltier heat, Single electrode, Transported entropy, Irreversible thermodynamics, Non-equilibrium thermodynamics, Overpotential, Integration, Impedance, Endothermic.
31.	, [URL].
32.	Koji Nitta, Shinji Inazawa, Kazunori Okada, Hironori Nakajima, Toshiyuki Nohira, Rika Hagiwara, Analysis of tungsten film electrodeposited from a ZnCl2–NaCl–KCl melt, Electrochimica Acta, 10.1016/j.electacta.2007.01.032, 53, 1, 53(1), pp. 20-23, 2007.09, [URL].
33.	Hironori NAKAJIMA, Toshiaki Konomi, Tatsumi KITAHARA, Direct water balance analysis on a polymer electrolyte fuel cell (PEFC): Effects of hydrophobic treatment and micro porous layer addition to the gas diffusion layer of a PEFC on its performance during a simulated start-up operation, Journal of Power Sources, 10.1016/j.jpowsour.2007.06.004, 171, 2, 457-463, 2007.09, [URL].
34.	Hironori NAKAJIMA, Toshiaki KONOMI, Tatsumi KITAHARA, Hideaki TACHIBANA, Electrochemical Impedance Parameters for the Diagnosis of a Polymer Electrolyte Fuel Cell Poisoned by Carbon Monoxide in Reformed Hydrogen Fuel, Transactions of the ASME, Journal of Fuel Cell Science and Technology, 10.1115/1.2931462, 5, 5, 041013, 2008.11, [URL].
35.	Analysis of Electric Generation Distribution on a PEFC Electrode : 3rd Report, Electric Generation Distribution in a PEFC Analyzed by Partial Electrode Method, Toshiaki KONOMI, Tatsumi KITAHARA, Hironori NAKAJIMA, Yuya TANAKA, 2009, Volume 75, Issue 749, Pages 164-169. Keywords: PEMFC, Local current density, In-situ, Current distribution, Rib, Land, Channel, CCM, MEA partially coated with catalyst layer, Partially-catalyzed membrane, [URL].
36.	Electrodeposition of metallic molybdenum films in ZnCl2–NaCl–KCl–MoCl3 systems at 250°C, [URL].
37.	Hironori Nakajima, Toshiyuki Nohira, Yasuhiko Ito, Signe Kjelstrup, Dick Bedeaux, The Surface Adsorption of Hydride Ions and Hydrogen Atoms on Zn Studied by Electrochemical Impedance Spectroscopy with a Non-Equilibrium Thermodynamic Formulation, Journal of Non-Equilibrium Thermodynamics, 10.1515/JNETDY.2006.011, 31, 231-255, Vol. 31, pp. 231-255, 2006.10, [URL].
38.	Toshiaki KONOMI, Tatsumi KITAHARA, Hironori NAKAJIMA, and Hiroki MURAKAMI, Analysis of Electric Generation Distribution on PEFC Electrode (1st Report, Electric Generation Distribution under Rib and Gas Channel), Transactions of the Japan Society of Mechanical Engineers, Series B, Vol.73, No.726 (2007-2), p.631-637. Keywords: PEMFC, Local current density, In-situ, Rib, Land, Channel, partial gas diffusion layer (GDL), Microporous layer (MPL), [URL].
39.	Katsutoshi Kobayashi, Hironori Nakajima, Takuya Goto, Yasuhiko Ito, Thermodynamics of the N2/N3-Redox Couple in a LiBr−KBr−CsBr Melt, The Journal of Physical Chemistry B, 10.1021/jp053920i, 109, 50, 23972-23975, 109, 23972-23975, 2005.12, [URL], Lithium Bromide, Eutectic melt, Nitride ion, Nitride formation, Ammonia production.
40.	Hironori NAKAJIMA, Toshiyuki Nohira, Yasuhiko Ito, Thermodynamic Investigations of Hydrogen Electrode Reaction in a Molten LiCl-KCl-LiH System, Electrochemical and Solid-State Letters, 10.1149/1.1462876, 5, E17-E22, 2002.05, [URL], Keywords: Molten chloride, Eutectic melt, Regenerative fuel cell, Silane production, SiH4, Isotope separation, Molten salt reactor, Thorium cycle, MSBR, Standard state, Standard potential, Activity coefficient, Hydride ion, Ionic liquid.
41.	Hironori Nakajima, Toshiyuki Nohira, Yasuhiko Ito, The single electrode Peltier heats of Li+/Li, H2/H− and Li+/Pd–Li couples in molten LiCl–KCl systems - ハイドライドイオン（ヒドリドイオン）／水素ガス電極系の非平衡熱力学（熱収支，輸率）, Electrochimica Acta, 10.1016/j.electacta.2004.06.014, 49, 27, 4987-4991, 2004.10, [URL].
42.	Hironori NAKAJIMA, Toshiyuki Nohira, Yasuhiko Ito, Infrared Spectroscopy of Molten LiCl-KCl-LiH, Electrochemical and Solid-State Letters, 7, E27-E29, 2004.07, [URL].
43.	, [URL].
44.	中島裕典, 野平俊之, 伊藤靖彦, 溶融LiCl-KCl中への水素の溶解, 電気化学および工業物理化学 : denki kagaku, 10.5796/electrochemistry.73.733, 73, 8, 733-735, 73, 733-735, 2005.08.
45.	, [URL].
46.	Katsutoshi Kobayashi, Hironori Nakajima, Takuya Goto and Yasuhiko Ito, Thermodynamic Investigations of Nitrogen Electrode Reaction in a Molten LiCl-KCl-CsCl-Li3N System, Journal of the Electrochemical Society, 152, E207-E211, 2005.05, [URL].
47.	Hironori NAKAJIMA, Toshiyuki Nohira, Rika Hagiwara, Electrodeposition of Metallic Tungsten in ZnCl2-NaCl-KCl-WCl4 Melt at 250゜C, Electrochemical and Solid-State Letters, 8, C91-C94, 2005.08, [URL].
48.	Hironori NAKAJIMA, Toshiyuki Nohira, Rika Hgiwara, Koji Nitta, Shinji Inazawa, Kazunori Okada, Electrodeposition of metallic molybdenum films in molten ZnCl2-NaCl-KCl-MoCl5 systems at 250°C, Journal of Rare Earths, 23, SUPPL. 1, 23, 16-20, 2005.10.

1.	Hironori Nakajima, Yoshihiro Iwanaga, Kohei Ito, Experimental and Numerical Analyses of a Cathode-Supported Monolithic Solid Oxide Electrolysis Cell, 14th International Conference on Hydrogen Production (ICH2P-2023), 2023.12.
2.	Kentaro Yokoo, Hironori Nakajima, Kohei Ito, Current and Temperature Distributions in a Planar Solid Oxide Electrolysis Cell In-situ Assessed with Segmented Electrodes, 14th International Conference on Hydrogen Production (ICH2P-2023), 2023.12.
3.	Hiroya Tamai, Hironori Nakajima, Evaluation of Hydrogen Production from Ammonia Reforming on Ni/ZnO Nanowire Catalysts, 14th International Conference on Hydrogen Production (ICH2P-2023), 2023.12.
4.	Yutaro Io, Yingtian Chi, Hironori Nakajima, In-Situ Current Distribution Measurements of a Planar Solid Oxide Fuel Cell for a Three-Dimensional Finite Element Model to Train a Machine-Learning Surrogate Model, 14th International Conference on Hydrogen Production (ICH2P-2023), 2023.12.
5.	Hironori Nakajima, Henrik Ekström, Asuka Shima, Yoshitsugu Sone, Göran Lindbergh, Water Transport Modeling in a Microporous Layer for a Polymer Electrolyte Membrane Water Electrolyzer Having a Gas-Liquid Separating Interdigitated Flow Field, 244th ECS Meeting, 2023.10.
6.	Shunji Kubota, Hironori Nakajima, Motohiko Sato, Asuka Shima, Masato Sakurai, Yoshitsugu Sone, Liquid Water Permeability in a Hydrophobic Microporous Layer for the Anode Interdigitated Flow Field of a Gas-Liquid Separating Polymer Electrolyte Membrane Water Electrolyzer, 244th ECS Meeting, 2023.10.
7.	Yoshitsugu Sone, Asuka Shima, Omar Samuel Mendoza-Hernandez, Hironori Nakajima, Hiroshige Matsumoto, Mitsuhiro Inoue, Takayuki Abe, Hybrid Reactor by the Combination of Water Electolyzer with Methanation Reactor Targeting the Space and Terrestrial Applications, 244th ECS Meeting, 2023.10.
8.	Shima, Asuka, Shima, Asuka, Sakurai, Masato, Sone, Yoshitsugu, Nakajima, Hironori, Inoue, Mitsuhiro, Abe, Takayuki, Development of CO2 Reduction-Water Electrolysis Tandem Device as a Full-Scale Model, 52nd International Conference on Environmental Systems.
9.	Hironori Nakajima, Jin Yamashita, Keiichi Okai, Takayuki Kojima, Numerical Modeling of a Pressurized Solid Oxide Fuel Cell for Electric Aircraft, 243rd ECS Meeting with the 18th International Symposium on Solid Oxide Fuel Cells (SOFC-XVIII), 2023.05, Electric aircraft have attracted attention to reducing carbon dioxide emissions and fuel consumption. Compared with conventional aircraft, distributed propulsion with electric motors is expected to increase the efficiency of the propulsion systems for the above purpose. Furthermore, the application of solid oxide fuel cell (SOFC) – gas turbine (GT) hybrid systems to their electric power sources is promising for higher efficiency. We have thus developed a three-dimensional numerical model of a planar SOFC pressurized for the combination with a GT for the optimal design and operation of practical cells. A software package with the finite element method (COMSOL Multiphysics 5.4) is employed to analyze the current and temperature distributions in a cell. Exchange current densities under pressurized conditions are experimentally evaluated using a symmetric test cell for the electrochemical kinetics in the model..
10.	Ammonia decomposition for hydrogen production with Ni/ZnO nanowire catalysts.
11.	Liquid Water Permeability Test for a Microporous Layer Applied to a Gas-Liquid Separating Polymer Electrolyte Membrane Water Electrolyzer.
12.	Asuka Shima, Masato Sakurai, Yoshitsugu Sone, Hironori Nakajima, Mitsuhiro Inoue, Takayuki Abe, Development of CO2 hydrogenation-water electrolysis tandem reactor, 51st International Conference on Environmental Systems, 2022.07.
13.	Development of CO2 hydrogenation-water electrolysis tandem reactor.
14.	Shintaro Iwasaki, Hironori, Nakajima, Tatsumi Kitahara, Pore Network Modeling of Hydrophilic / Hydrophobic Composite Microporous Layers for Polymer Electrolyte Fuel Cells, 240th ECS Meeting, 2021.10.
15.	Hironori Nakajima, Shintaro Iwasaki, Tatsumi Kitahara, Mass Transfer in Microporous Layers for Polymer Electrolyte Fuel Cells Analyzed with Pore Network Modeling, 240th ECS Meeting, 2021.10.
16.	Wang Xuefeng, Hironori Nakajima, Kohei Ito, Spatial Current and Temperature Variations in a Microtubular Solid Oxide Electrolysis Cell In-Situ Analyzed with Electrode-Segmentation Method, SOFC17, 2021.07.
17.	Tasuku Higa, Hironori Nakajima, Evaluation of Three-Dimensional Placement of Built-in Catalytic Partial Oxidation Catalyst in an Anode-Supported Honeycomb SOFC, SOFC17, 2021.07.
18.	Tandem system by the combination of a novel water elctrolyzer with CO2 hydrogenation reactor.
19.	Hiroyuki MISE, Masahiro Nakamura, Yuya Tachikawa, Hironori Nakajima, Kohei Ito, Characteristics of a Planar SOFC With Load Variation (A1515), 14th European SOFC & SOE Forum, 2020.10, Renewable energy such as solar power and wind power has been widely introduced to mitigate environmental impacts in energy consumption, but it needs power output leveling for demand. SOFCs can be a candidate for the component thanks to their high efficiency. However, load variation for the leveling gives rise to time variation in distributions of fuel/oxidant concentration, current, and temperature in a cell, affecting the power output stability and the durability of a cell. We have therefore developed a finite element method model of a planar SOFC verified with measurement using segmented electrodes, and investigated corresponding cell behavior assumed in a model of a stationary combined heat and power (CHP) system and limitation of load variation for durable cell/interconnector designs and operating conditions..
20.	Hironori Nakajima, Experimental and Numerical Analyses of Mass Transfer in Solid Oxide Cells, PRiME 2020, 2020.10, [URL].
21.	Tasuku Higa, Hironori Nakajima, Fabrication and Evaluation of an Anode-Supported Honeycomb SOFC with Built-in Catalytic Partial Oxidation Micro-Reformer, PRiME 2020, 2020.10, [URL].
22.	Shintaro Iwasaki, Hironori Nakajima, Tatsumi Kitahara, Pore Network Modeling of Microporous Layers for Polymer Electrolyte Fuel Cells, PRiME 2020, 2020.10, [URL].
23.	Hydrogen Production From Methanol Steam Reforming With ZnO/CuO Nanowire Catalyst.
24.	中島裕典, カーボンリサイクル社会に向けた燃料電池研究, 第11回エネルギー理工学研究所国際シンポジウム（コロナ禍におけるゼロエミッションエネルギー研究活動）, 2020.09, [URL].
25.	, [URL].
26.	, [URL].
27.	, [URL].
28.	, [URL].
29.	, [URL].
30.	Yoshihiro Iwanaga, Hironori NAKAJIMA, Kohei ITO, Electrolytic Performance of a Cathode-Supported Honeycomb Solid Oxide Electrolysis Cell, 236th Meeting of the Electrochemical Society, 2019.10, [URL].
31.	Kohei Sasaki, Hironori NAKAJIMA, Tatsumi KITAHARA, Electrochemical Impedance Spectroscopy Analysis of Carbon Deposition in an Anode-Supported Planar Solid Oxide Fuel Cell By Segmented Electrodes, 236th Meeting of the Electrochemical Society, 2019.10, [URL].
32.	Y. Iwanaga, H. Nakajima, and K. Ito, Fuel Production with a Cathode-Supported Honeycomb Solid Oxide Electrolysis Cell, 16th International Symposium on Solid Oxide Fuel Cells (SOFC-XVI), 2019.09, [URL].
33.	Kohei Sasaki, Hironori Nakajima, Tatsumi Kitahara, Influence of Carbon Deposition on the Current Distribution in an Anode-Supported Planar Solid Oxide Fuel Cell in-Situ Assessed by Segmented Electrodes, 16th International Symposium on Solid Oxide Fuel Cells (SOFC-XVI), 2019.09, [URL].
34.	Hiroki IINUMA, Yoshio MATSUZAKI, Koki SATO, Yoshitaka BABA, Yuya TACHIKAWA, Hironori NAKAJIMA, Shunsuke TANIGUCHI, Junichiro OTOMO, Conceptual Design for Significant Improvement in Efficiency of Long-Term Energy Storage with Reversible Solid Oxide Cells (R-SOC), Asian Pacific Confederation of Chemical Engineering (APCChE), 2019.09, [URL].
35.	Hironori NAKAJIMA, Mass Transfer in Fuel Cells, NGRC (Nucleation & Growth Research Conference) – International Workshop of Electrochemical/Materials Processing for Renewable Energy –, 2019.06, [URL].
36.	, [URL].
37.	, [URL].
38.	, [URL].
39.	, [URL].
40.	, [URL].
41.	Hironori NAKAJIMA, In-plane Current Variations in Solid Oxide Fuel Cells In-situ Identified by Cathode Segmentation, The 10th Kyoto International Forum for Environment and Energy (KIFEE) Symposium, 2018.10, [URL].
42.	Shunzaburo Murakami, Hironori NAKAJIMA, Current Distributions in Anode-Supported Honeycomb Solid Oxide Fuel Cells, The 10th Kyoto International Forum for Environment and Energy (KIFEE) Symposium, 2018.10, [URL], An anode-supported honeycomb solid oxide fuel cell (SOFC) gives high volumetric power density and improves thermo-mechanical durability at high temperatures. We have so far shown the promising power densities and investigated the effect of the internal flow channel configurations on the cell performance in terms of the hydrogen partial pressure distributions in the cell under operation. In this study, we have investigated the current distribution of anode-supported honeycomb solid oxide fuel cells by finite element analysis and proposed new flow channel structures for practical use.
43.	Wataru Matsunaka, Hironori NAKAJIMA, Alejandro Santis, Dimos Poulikakos, Evaluation of a Micro CPOX Reformer for Solid Oxide Fuel Cells, The 10th Kyoto International Forum for Environment and Energy (KIFEE) Symposium, 2018.10, [URL].
44.	H.-W. Li, L. He, H. Nakajima, S.-J. Hwang, Y. Filinchuk, H. Hagemann, T. R. Jensen, E. Akiba, Metal Boron Hydrides for Multiple Energy Applications, The 5th International Conference on Nanomechanics and Nanocomposites (ICNN5), 2018.08, [URL].
45.	Kohei Sasaki, Hironori Nakajima, Tatsumi Kitahara, Spatial Electrochemical Impedance Spectroscopy Analysis of an Anode-supported Planar Solid Oxide Fuel Cell with Segmented Electrodes, The 5th Asian SOFC Symposium, 2018.08, [URL].
46.	Masahiro Joki, Yuto Wakita, Yuya Tachikawa, Hironori Nakajima, Kohei Ito, Analysis of Resistance Components of a Practical Planar-Type SOFC with the Distribution of Relaxation Time Method, The 5th Asian SOFC Symposium, 2018.08, [URL].
47.	Yuto Wakita, Yuya Tachikawa, Hironori Nakajima, Kohei Ito, Effect of Glass Wettability on the Mechanical Reliability of the Planar SOFC, The 5th Asian SOFC Symposium, 2018.08, [URL].
48.	H.-W. Li, L. He, H. Nakajima, Y. Filinchuk, H. Hagemann, T. R. Jensen, E. Akiba, Metal born hydrides for high density hydrogen storage and fast ionic conductivity, THERMEC2018, 2018.07, [URL].
49.	, [URL].
50.	H.-W. Li, L. He, H. Nakajima, S. Hwang, Y. Filinchuk, H. Hagemann, T. R. Jensen, E. Akiba, Facile Synthesis of Metal Boron Hydrides for Fast Ionic Conductivity, 22nd World Hydrogen Energy Conference (WHEC2018), 2018.06, [URL].
51.	Hironori Nakajima, Kohei Sasaki, Kenta Dan, Özgür Aydın, Tatsuhiro Ochiai, Tatsumi Kitahara, Kohei Ito, In-plane Current Distribution in the Planar Solid Oxide Fuel Cell In-situ Identified by Segmented Cathodes, 22nd World Hydrogen Energy Conference (WHEC2018), 2018.06, [URL].
52.	, [URL].
53.	, [URL].
54.	, [URL].
55.	, [URL].
56.	, [URL].
57.	Shunzaburo Murakami, Hironori NAKAJIMA, Tatsumi KITAHARA, Anode-Supported Honeycomb Solid Oxide Fuel Cell Depending on the Flow Channel Configurations, 2017 The 3rd International Conference on Inventions, 2017.10.
58.	Hironori Nakajima, Akiko Inada, Tatsumi Kitahara, Electrochemical Impedance Spectroscopy Study of the Electrode Microstructure of the Lithium-Ion Battery, 2017 The 3rd International Conference on Inventions, 2017.10.
59.	Hironori Nakajima, Mass Transfer in the Solid Oxide Fuel Cell, 2017 The 3rd International Conference on Inventions, 2017.10.
60.	Hironori NAKAJIMA, Tatsumi KITAHARA, Eisaku TSUDA, In-situ Segmented Electrode Analysis of In-plane Current Distributions in an Anode-Supported Planar Solid Oxide Fuel Cell for Marine Power Applications, The 11th International Symposium on Marine Engineering (ISME2017), 2017.10.
61.	Tatsumi KITAHARA, Hironori NAKAJIMA, Kenta DAN, Impedance Spectroscopy to Prevent Performance Degradation Due to Sea Salt for Marine Polymer Electrolyte Fuel Cells, The 11th International Symposium on Marine Engineering (ISME2017), 2017.10.
62.	Shunzaburo Murakami, Hironori NAKAJIMA, Tatsumi KITAHARA, Development of the Flow Channel Structure of an Anode-Supported Honeycomb Solid Oxide Fuel Cell for High Power Density, 2017 The 3rd International Conference on Inventions, SPINTECH Technology Thesis Awards Section, 2017.09, An anode-supported honeycomb solid oxide fuel cell (SOFC) gives high volumetric power density and improves thermo-mechanical durability at high temperatures. We have so far shown the promising power densities and investigated the effect of the internal flow channel assignments and the porous anode support thicknesses on the cell performance in terms of the hydrogen partial pressure distributions in the cell under operation. In this study, we measure ohmic resistances of the honeycomb cells by current interrupt method, and indicate the impact of Ni reoxidation in the anode support resulting in high internal ohmic resistances. Fuel depletion in the cell causes the Ni reoxidation, and deteriorates the performance of the honeycomb cell..
63.	Ö. Aydın, H. Nakajima, and T. Kitahara, In Situ Measured Spatial Temperature Variations for Improving Reliability of Numerical SOFC Tools, 15th International Symposium on Solid Oxide Fuel Cells (SOFC-XV), 2017.07, [URL].
64.	T. Ochiai, H. Nakajima, T. Karimata, T. Kitahara, K. Ito, and Y. Ogura, In-Situ Analysis of the in-Plane Current Distribution Difference between Electrolyte-Supported and Anode-Supported Planar Solid Oxide Fuel Cells by Segmented Electrodes, 15th International Symposium on Solid Oxide Fuel Cells (SOFC-XV), 2017.07, [URL].
65.	H. Nakajima, T. Kitahara, and E. Tsuda, Segmented Electrode Analysis of an Anode-Supported Planar Solid Oxide Fuel Cell for the Diagnosis of Marine Power Applications, 15th International Symposium on Solid Oxide Fuel Cells (SOFC-XV), 2017.07, [URL].
66.	Liqing He, LI Hai-Wen, Hironori NAKAJIMA, Yaroslav Filinchuk, Hans Hagemann, Etsuo Akiba, Zhouguang Lu, Bimetallic Dodecaborate LiNaB12H12 and Its Application in All-solid-state Batteries, The 2017 MRS Spring Meeting and Exhibit, 2017.04, [URL].
67.	Hironori NAKAJIMA, Power Generation with an Anode-supported Honeycomb Solid Oxide Fuel Cell, 2017 International Conference on Smart Science, 2017.04.
68.	, [URL].
69.	, [URL].
70.	Hironori NAKAJIMA, Tatsumi Kitahara, Impedance Spectra Associated with Metal Deposition at the Negative Electrode from Contaminated Metal Particles at the Positive Electrode in a Lithium Ion Battery, 230th Meeting of the Electrochemical Society (PRiME2016), 2016.10, [URL].
71.	Tatsuhiro OCHIAI, Hironori NAKAJIMA, Takahiro KARIMATA, Tatsumi KITAHARA, Kohei ITO, Yusuke OGURA, Jun SHIMANO, Direct Current Distribution Measurement of an Electrolyte-Supported Planar Solid Oxide Fuel Cell Under the Rib and Channel by Segmented Electrodes, 230th Meeting of the Electrochemical Society (PRiME2016), 2016.10, [URL].
72.	Hironori NAKAJIMA, Akiko Inada, Tatsumi Kitahara, Impedance Spectra for Metal Deposition at the Negative Electrode in a Lithium Ion Battery from Dissolving Metal Particle Contaminants at the Positive Electrode, NGRC (Nucleation & Growth Research Conference) – International Workshop of Electrochemical/Materials Processing for Renewable Energy –, 2016.09, [URL].
73.	Hironori NAKAJIMA, Fundamentals of Solid Oxide Fuel Cell and electrochemical evaluation, School on Micro-Nanotechnology (MINATEC 2016), 2016.09.
74.	LI Hai-Wen, Liqing He, Hironori NAKAJIMA, Yaroslav Filinchuk, Son-Jong Hwang, Hans Hagemann, Torben R. Jensen, Etsuo Akiba, Material Designing of Metal Boranes for Energy Storage, 15TH INTERNATIONAL SYMPOSIUM ON METAL-HYDROGEN SYSTEMS, MH 2016, 2016.08, [URL].
75.	Hironori NAKAJIMA, Tatsumi KITAHARA, Sou IKEDA, Fuel Distributions in Anode-Supported Honeycomb Solid Oxide Fuel Cells, 12th EUROPEAN SOFC & SOE FORUM, 2016.07, [URL].
76.	Özgür Aydın, Hironori NAKAJIMA, Tatsumi Kitahara, Accuracy of the Numerically Computed Spatial Current and Temperature Variations in SOFCs, 12th EUROPEAN SOFC & SOE FORUM, 2016.07, [URL].
77.	Sou IKEDA, Hironori NAKAJIMA, Tatsumi KITAHARA, ENHANCEMENT OF FUEL TRANSFER IN ANODESUPPORTED HONEYCOMB SOLID OXIDE FUEL CELLS, 7th European Thermal-Sciences Conference (EUROTHERM 2016), 2016.06, [URL].
78.	Hironori NAKAJIMA, Tatsumi KITAHARA, REAL-TIME ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY DIAGNOSIS OF THE MARINE SOLID OXIDE FUEL CELL, 7th European Thermal-Sciences Conference (EUROTHERM 2016), 2016.06, [URL].
79.	Sou IKEDA, Shota KOTAKE, Hironori NAKAJIMA, Tatsumi KITAHARA, Mass Transfer Analysis of Anode-Supported Honeycomb Solid Oxide Fuel Cells, The 66th Annual Meeting of the International Society of Electrochemistry, 2015.10, [URL].
80.	Özgür Aydın, Hironori NAKAJIMA, Tatsumi Kitahara, Influence of Convective Heat Transfer By Air Flow on Local Current/Temperature Along Microtubular Solid Oxide Fuel Cells in-Situ Identified with Electrode-Segmentation Method for Co- and Counter-Flow Configurations, 14th International Symposium on Solid Oxide Fuel Cells (SOFC-XIV), 2015.07.
81.	Takahiro KOSHIYAMA, Hironori NAKAJIMA, Takahiro KARIMATA, Tatsumi KITAHARA, Kohei ITO, Soichiro MASUDA, Yusuke OGURA, Jun SHIMANO, Direct Current Distribution Measurement of an Electrolyte-Supported Planar Solid Oxide Fuel Cell Under the Rib and Channel by Segmented Electrodes, 14th International Symposium on Solid Oxide Fuel Cells (SOFC-XIV), 2015.07.
82.	Hironori NAKAJIMA, Tatsumi KITAHARA, Diagnosis Method to Detect the Incorporation of Metallic Particles in a Lithium Ion Battery, ECS Conference on Electrochemical Energy Conversion & Storage with SOFC-XIV, 2015.07.
83.	Özgür Aydın, Takahiro KOSHIYAMA, Hironori NAKAJIMA, Tatsumi Kitahara, Experimental Evaluation of Internal Hydrocarbon Reforming Reaction in Microtubular SOFCs by Segmentation Method, The 18th International Symposium on Batteries, Fuel Cells and Capacitors, 2014.11.
84.	Hironori NAKAJIMA, Tatsumi KITAHARA, Yuta HIGASHINAKA, Yusaku NAGATA, Effect of Electrode Mixing Conditions on the Performance of Lithium-Ion Batteries Analyzed by Fast Fourier Transform Electrochemical Impedance Spectroscopy, 226th Electrochemical Society Meeting, 2014.10.
85.	Özgür Aydın, Takahiro KOSHIYAMA, Hironori NAKAJIMA, Tatsumi Kitahara, Impact of Inhomogeneous Fuel Distribution on Performance Degradation of Microtubular SOFCs Analyzed by Segmentation Method, 7th Kyushu University-KAIST Workshop, 2014.09.
86.	Özgür Aydın, Takahiro KOSHIYAMA, Hironori NAKAJIMA, Tatsumi Kitahara, Spacial Characterization of Microtublar SOFCs by Segmentation Method, 第68回マテリアルズテーラリング研究会, 2014.07.
87.	Takahiro KOSHIYAMA, Hironori NAKAJIMA, Tatsumi Kitahara, Current Distribution Measurements of a Microtubular Solid Oxide Fuel Cell Fed with Simulated Syngas, 20th World Hydrogen Energy Conference, 2014.06.
88.	Hironori NAKAJIMA, Daeho Lee, Ming-Tsang Lee, Costas P. Grigoropoulos, HYDROGEN PRODUCTION WITH CuO/ZnO NANOWIRE CATALYST FOR A NANOCATALYTIC SOLAR THERMAL STEAM-METHANOL REFORMER, International Conference on Hydrogen Production ICH2P-2014, 2014.02.
89.	Hironori NAKAJIMA, Performance of an Anode-Supported Honeycomb Solid Oxide Fuel Cell, THERMEC’2013, International Conference on PROCESSING & MANUFACTURING OF ADVANCED MATERIALS, 2013.12.
90.	Hironori NAKAJIMA, Tatsumi Kitahara, Kazuto Tsuda, Water Vapor Exchange Flow Channels to Enhance the Performance of Polymer Electrolyte Fuel Cells without Cathode Humidification, 224th ECS Meeting, 2013.10.
91.	Shota Kotake, Hironori NAKAJIMA, Tatsumi Kitahara, Flow Channel Configurations of an Anode-Supported Honeycomb Solid Oxide Fuel Cell, 13th International Symposium on Solid Oxide Fuel Cells, 2013.10.
92.	Akira Shimizu, Hironori NAKAJIMA, Tatsumi Kitahara, Current Distribution Measurement of a Microtubular Solid Oxide Fuel Cell, 13th International Symposium on Solid Oxide Fuel Cells, 2013.10.
93.	R. Matsumoto, H. Nakajima, and T. Kitahara, Current Distribution in a Microtubular SOFC Estimated from Temperature Measurement, The 51th Battery Symposium in Japan.
94.	T. Jo, H. Nakajima, and T. Kitahara, Research on a Test Method for the Incorporation of Metallic Particles in a Lithium Ion Battery, The 51th Battery Symposium in Japan.
95.	Drying Process inside a PEFC after Finishing Electric Generation，The 50th Battery Symposium in Japan.
96.	, [URL].
97.	, [URL].
98.	, [URL].