Papers - CHISAKA Mitsuharu
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Reversible valence states with irreversible crystal structures of NiFe layered double hydroxide catalysts: surface stability during the oxygen evolution reaction
3 ( 11 ) 5128 - 5135 2025.11
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Strengthening P–S bonding in TiO2 for enhanced fuel cell startup/shutdown durability with an N, P, S-TiO2/S-TiN catalyst
15 ( 19 ) 5669 - 5677 2025.10
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Review of carbon-support-free platinum and non-platinum catalysts for polymer electrolyte fuel cells: will they feature in future vehicles?
12 ( 30 ) 18636 - 18673 2024.8
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S-doped TiN supported N, P, S-tridoped TiO2 with hetero-phase junctions for fuel cell startup/shutdown durability
12 ( 19 ) 11277 - 11285 2024.5
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Vanadium doping to increase the production batch size of Carbon-Free Ti4O7: A new strategy for its mass production
Mitsuharu Chisaka*, Waka Nagano, Sota Takahashi, Byambasuren Delgertsetseg, Hidenobu Wakita and Tatsuya Takeguchi*
Journal of Electroanalytical Chemistry 934 ( 1 ) 117308-1 - 117308-10 2023.4
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Enhancement of Oxygen Reduction Reactivity on TiN by Tuning the Work Function via Metal Doping
Mitsuharu Chisaka*, Toshiyuki Abe, Rong Xiang, Shigeo Maruyama, Hirofumi Daiguji
Physical Chemistry Chemical Physics 24 ( 48 ) 29328 - 29332 2022.12
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Photoelectrochemical and Photocatalytic Studies by Applying an Organic P-N Bilayer for the Selective Oxidation of Ammonia to Dinitrogen
Kentaro Fujine, Masato Nakamura, Hidenobu Shiroishi, Mitsuharu Chisaka and Toshiyuki Abe*
Journal of Electroanalytical Chemistry 908 116091-1 - 116091-8 2022.3
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Twofold Effects of Zirconium Doping into TiN on Durability and Oxygen Reduction Reactivity in an Acidic Environment
Mitsuharu Chisaka*, Rong Xiang, Shigeo Maruyama, Hirofumi Daiguji
Energy & Fuels 36 ( 1 ) 539 - 547 2022.1
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Inexpensive gram scale synthesis of porous Ti<sub>4</sub>O<sub>7</sub> for high performance polymer electrolyte fuel cell electrodes.
Chisaka M, Nagano W, Delgertsetseg B, Takeguchi T
Chemical communications (Cambridge, England) 57 ( 95 ) 12772 - 12775 2021.11
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Suppression of H2O2 Formation and Durability of Various Hydrogen Anode Catalysts for Long-Life Fuel Cells
Muhammad Imran, Muhammad Farooq, Wataru Sugimoto, Mitsuharu Chisaka, Waka Nagano, Tatsuya Takeguchi, Nobuki Ozawa, Momoji Kubo, Hanako Nishino and Hiroyuki Uchida*
Journal of the Electrochemcial Society 172 ( 3 ) 034505-1 - 034505-7 2025.3
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Enhanced Photoanodic Activity and Outermost Surface Crystallinity of Tungsten Oxide via High-temperature Sintering
Toshiyuki Abe, Hideya Tsuchikado, Mitsuharu Chisaka, Takashi Itoh, Guoqing Guan & Abuliti Abudula
Electrocatalysis 15 ( 1 ) 120 - 127 2024.1
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Simple method of determining the ion transport parameters of binary liquid electrolytes
Jun Okagaki, Wei-Lun Hsu, Mitsuharu Chisaka, Eunjoo Yoo, Hirofumi Matsuda and Hirofumi Daiguji*
Journal of Electroanalytical Chemistry 929 ( 1 ) 117105-1 - 117105-10 2023.1
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Efficient Phosphorus Doping into the Surface Oxide Layers on TiN to Enhance Oxygen Reduction Reaction Activity in Acidic Media
Mitsuharu Chisaka*, Rong Xiang, Shigeo Maruyama, Hirofumi Daiguji
ACS Applied Energy Materials 3 ( 10 ) 9866 - 9876 2020.9
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Phosphor and Nitrogen Co-doped Rutile TiO2 Covered on TiN for Oxygen Reduction Reaction in Acidic Media
Mitsuharu Chisaka* and Hiroyuki Morioka
Catalysis Science & Technology 9 ( 3 ) 611 - 619 2019.2
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Creation of Oxygen Reduction Reaction Active Sites on Titanium Oxynitride Without Increasing the Nitrogen Doping Level
Mitsuharu Chisaka*
Physical Chemistry Chemical Physics 20 ( 23 ) 15613 - 15617 2018.6
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Active Site Formation for Oxygen Reduction Reaction on Carbon-Support-Free Titanium Oxynitride with Boosted Activity in Acidic Media
Mitsuharu Chisaka*, Yusuke Yamamoto, Noriaki Itagaki and Yuhei Hattori
ACS Applied Energy Materials 1 ( 1 ) 211 - 219 2018.1
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Zirconium Oxynitride-Catalyzed Oxygen Reduction Reaction at Polymer Electrolyte Fuel Cell Cathodes
Mitsuharu Chisaka*, Akimitsu Ishihara, Hiroyuki Morioka, Takaaki Nagai, Shihong Yin, Yoshiro Ohgi, Koichi Matsuzawa, Shigenori Mitsushima, and Ken-ichiro Ota
ACS Omega 2 ( 2 ) 678 - 684 2017.2
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A Carbon-Support-Free Titanium Oxynitride Catalyst for Proton Exchange Membrane Fuel Cell Cathodes
Mitsuharu Chisaka*, Yuta Ando, Yusuke Yamamoto and Noriaki Itagaki
Electrochimica Acta 214 ( 1 ) 165 - 172 2016.10
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Evaluation and Enhancement of the Oxygen Reduction Reaction Activity on Hafnium Oxide Nanoparticles Assisted by L(+)-lysine
Mitsuharu Chisaka* and Noriaki Itagaki
Electrochimica Acta 201 ( 1 ) 279 - 285 2016.5
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Activity and Durability of the Oxygen Reduction Reaction in a Nitrogen-Doped Rutile-Shell on TiN-Core Nanocatalysts Synthesised via Solution-Phase Combustion
Mitsuharu Chisaka*, Yuta Ando and Noriaki Itagaki
Journal of Materials Chemistry A 4 ( 7 ) 2501 - 2508 2016.2
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Facile Combustion Synthesis of Carbon-Supported Titanium Oxynitride to Catalyse Oxygen Reduction Reaction in Acidic Media
Mitsuharu Chisaka*, Yuta Ando, and Hirokazu Muramoto
Electrochimica Acta 183 ( 1 ) 100 - 106 2015.11
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Ti-Nb oxide-based catalysts as non-platinum cathodes for PEFC
Yuko Tamura*, Akimitsu Ishihara, Mitsuharu Chisaka, Yuji Kohno, Koichi Matsuzawa, Shigenori Mitsushima, and Ken-ichiro Ota
Fuel Cell 15 ( 2 ) 79 - 86 2015.10
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Titanium-Niobium Oxides as Non-Noble Metal Cathodes for Polymer Electrolyte Fuel Cells
Akimitsu Ishihara*, Yuko Tamura, Mitsuharu Chisaka, Yoshiro Ohgi, Yuji Kohno, Koichi Matsuzawa, Shigenori Mitsushima, and Ken-ichiro Ota
Catalysts 5 ( 3 ) 1289 - 1303 2015.7
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Nano-TaOxNy Particles Synthesized from Oxy-tantalum Phthalocyanine: How to Prepare Precursors to Enhance the Oxygen Reduction Reaction Activity after Ammonia Pyrolysis
Mitsuharu Chisaka*, Akimitsu Ishihara*, Naoki Uehara, Masashi Matsumoto, Hideto Imai, and Ken-ichiro Ota
Journal of Materials Chemistry A 3 ( 32 ) 16414 - 16418 2015.6
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Synthesis of Nano-TaOx Oxygen Reduction Reaction Catalysts on Multi-Walled Carbon Nanotubes Connected via a Decomposition of Oxy-tantalum Phthalocyanine
Akimitsu Ishihara*, Mitsuharu Chisaka*, Yoshiro Ohgi, Koichi Matsuzawa, Shigenori Mitsushima, and Ken-ichiro Ota
Physical Chemistry Chemical Physics 17 ( 12 ) 7643 - 7647 2015.2
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Monoclinic Hafnium Oxynitride Supported on Reduced Graphene Oxide to Catalyse the Oxygen Reduction Reaction in Acidic Media
Mitsuharu Chisaka,* Hirohito Sasaki and Hirokazu Muramoto
Physical Chemistry Chemical Physics 16 ( 38 ) 20415 - 20419 2014.10
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Aluminum-Doped Hafnium Oxynitride: Effect of Cation-Doping on Oxygen Reduction Reaction Activity in Acid Media
Mitsuharu Chisaka* and Hirokazu Muramoto
ChemElectroChem 1 ( 5 ) 863 - 867 2014.5
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Reduced Graphene-Oxide-Supported Titanium Oxynitride as Oxygen Reduction Reaction Catalyst in Acid Media
Mitsuharu Chisaka* and Hirokazu Muramoto
ChemElectroChem 1 ( 1 ) 544 - 548 2014.3
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Suppression and Evaluation of Hydrogen Peroxide Formation on Carbon-Supported Hafnium Oxynitride
Mitsuharu Chisaka* and Hirokazu Muramoto
ECS Electrochemistry Letters 3 ( 3 ) F1 - F4 2014.3
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Synthesis of Carbon-Supported Titanium Oxynitride Nanoparticles as Cathode Catalyst for Polymer Electrolyte Fuel Cells
Mitsuharu Chisaka*, Akimitsu Ishihara, Ken-ichiro Ota, and Hirokazu Muramoto
Electrochimica Acta 113 ( 1 ) 735 - 740 2013.12
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Improving ORR Activity of Group 4 and 5 Metal Oxide-Based Cathodes for PEFCs
A. Ishihara*, S. Yin, K. Suito, N. Uehara, Y. Okada, Y. Kohno, K. Matsuzawa, S. Mitsus-hima, M. Chisaka, Y. Ohgi, M. Matsumoto, H. Imai, K. Ota
ECS Transactions 58 ( 1 ) 1495 - 1500 2013.10
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Oxygen Reduction Reaction Activity of Nitrogen-Doped Titanium Oxide in Acid Media
Mitsuharu Chisaka, Akimitsu Ishihara, Kazuaki Suito, Ken-ichieo Ota, and Hirokazu Muramoto
Electrochimica Acta 88 ( 1 ) 697 - 707 2013.1
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Carbon Catalyst Codoped with Boron and Nitrogen for Oxygen Reduction Reaction in Acid Media
Mitsuharu Chisaka, Tomohiro Iijima, et al.,
Electrochimica Acta 85 ( 1 ) 399 - 410 2012.12
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Active Sites for Oxygen Reduction Reaction and the Reaction Mechanism in Carbon-Supported Hafnium Oxynitride
Mitsuharu Chisaka, Yuta Suzuki, et al.,
ECS Electrochemistry Letters 1 ( 1 ) F4 - F8 2012.7
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Effect of Synthesis Route on Oxygen Reduction Reaction Activity of Carbon-Supported Hafnium Oxynitride in Acid Media
Mitsuharu Chisaka, Tomohiro Iijima, et al.,
The Journal of Physical Chemistry C 115 ( 42 ) 20610 - 20617 2011.9
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Carbon-Supported Hafnium Oxynitride as Cathode Catalyst for Polymer Electrolyte Membrane Fuel Cells
Mitsuharu Chisaka, Tomohiro Iijima, et al.,
Electrochimica Acta 56 ( 12 ) 4581 - 4588 2011.4
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Oxygen Reduction Reaction Activity of Vulcan XC-72 Doped with Nitrogen under NH3 Gas in Acid Media
Mitsuharu Chisaka, Tomohiro Iijima, et al.,
Journal of the Electrochemical Society 157 ( 11 ) B1701 - B1708 2010.11
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Effect of Organic Solvents on the Pore Structure of Catalyst Layers in Polymer Electrolyte Membrane Fuel Cells
Mitsuharu Chisaka, Eitaro Matsuoka and Hirofumi Daiguji
Journal of the Electrochemical Society 157 ( 8 ) B1218 - B1221 2010.8
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Effect of Organic Solvents on Catalyst Layer Structure in Polymer Electrolyte Membrane Fuel Cells
Mitsuharu Chisaka and Hirofumi Daiguji
Journal of the Electrochemical Society 156 ( 1 ) B22 - B26 2009.1
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Design of Ordered Catalyst Layers for Polymer ElectrolyteMembrane Fuel Cell Cathodes
Mitsuharu Chisaka and Hirofumi Daiguji
Electrochemistry Communications 8 ( 8 ) 1304 - 1308 2006.8
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Effect of Glycerol on Micro/Nano Structures of Catalyst Layers in Polymer Electrolyte Membrane Fuel Cells
Mitsuharu Chisaka and Hirofumi Daiguji
Electrochimica Acta 51 ( 23 ) 4828 - 4833 2006.6
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The Micro/Nano Structures of Catalyst Layers and Cell Performance in Polymer Electrolyte Membrane Fuel Cells
Mitsuharu Chisaka and Hirofumi Daiguji
Thermal Science and Engineering 13 ( 4 ) 45 - 46 2005.7