If you made any changes in Pure these will be visible here soon.

Research Output 1993 2016

  • 2025 Citations
  • 26 h-Index
  • 63 Article
  • 47 Conference contribution
  • 3 Chapter
Filter
Conference contribution
2015

Development of group 4 and 5 metal oxide cathode with electron conductive oxide

Ota, K. I., Hamazaki, M., Matsuzawa, K., Mitsushima, S. & Ishihara, A. 2015 ECS Transactions. 17 ed. Electrochemical Society Inc., Vol. 69, p. 13-21 9 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxides
Oxidation
Electrons
Metals
Metal complexes

Oxide-based electrocatalysts toward oxygen reduction reaction as non Pt cathodes for PEFC

Uehara, N., Ishihara, A., Imai, H., Matsumoto, M., Arao, M., Ohgi, Y., Kohno, Y., Matsuzawa, K., Mitsushima, S. & Ota, K. I. 2015 ECS Transactions. 36 ed. Electrochemical Society Inc., Vol. 64, p. 23-31 9 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen
Cathodes
Tantalum oxides
Oxides
Electrocatalysts

Oxygen reduction durability and activity of tantalum oxide-based electrocatalysts for cathode of polymer electrolyte fuel cells

Matsuzawa, K., Ishihara, A., Uehara, N., Fujita, Y., Kohno, Y., Matsumoto, M., Ohgi, Y., Mitsushima, S., Imai, H. & Ota, K. I. 2015 ECS Transactions. 17 ed. Electrochemical Society Inc., Vol. 69, p. 3-12 10 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tantalum oxides
Durability
Oxygen
Fuel cells
Cathodes
2014
1 Citations

Enhancement of oxygen reduction activity of titanium nano-oxide-based electrocatalysts for PEFC cathode

Hayashi, T., Ishihara, A., Matsumoto, M., Imai, H., Kohno, Y., Matsuzawa, K., Mitsushima, S. & Ota, K. 2014 ECS Transactions. 3 ed. Electrochemical Society Inc., Vol. 64, p. 247-252 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen
Titanium oxides
Titanium
Catalysts
Electrocatalysts
1 Citations

Improvement of the electrocatalytic activity of zirconium oxide-based catalyst for ORR

Okada, Y., Ishihara, A., Arao, M., Matsumoto, M., Imai, H., Kohno, Y., Matsuzawa, K., Mitsushima, S. & Ota, K. I. 2014 ECS Transactions. 3 ed. Electrochemical Society Inc., Vol. 64, p. 231-238 8 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen
Electrocatalysts
Zirconia
Chemical stability
Zirconium

Oxide-based electrocatalysts as precious metal and carbon free cathodes for PEFC

Hamazaki, M., Ishihara, A., Arao, M., Matsumoto, M., Imai, H., Kohno, Y., Matsuzawa, K., Mitsushima, S. & Ota, K. 2014 ECS Transactions. 3 ed. Electrochemical Society Inc., Vol. 64, p. 239-246 8 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxides
Cathodes
Oxygen
Electrocatalysts
Oxygen vacancies
2013
1 Citations

Activity of tantalum oxide-based electrocatalysts toward oxygen reduction reaction for PEFC

Uehara, N., Ishihara, A., Kohno, Y., Matsuzawa, K., Mitsushima, S. & Ota, K. I. 2013 ECS Transactions. 1 ed. Electrochemical Society Inc., Vol. 58, p. 1217-1223 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen
Cathodes
Tantalum oxides
Ball milling
Catalyst supports

Advanced study of transition metal oxidebased cathode for PEFCS

Ota, K., Matsuzawa, K., Mitsushima, S. & Ishihara, A. 2013 EFC 2013 - Proceedings of the 5th European Fuel Cell Piero Lunghi Conference. ENEA, p. 71-72 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cathodes
Oxides
Catalyst activity
Cost reduction
Transition metals
4 Citations

Enhancement of oxygen reduction activity of zirconium oxide-based cathode for PEFC

Yin, S., Ishihara, A., Kohno, Y., Matsuzawa, K., Mitsushima, S., Ota, K. I., Matsumoto, M. & Imai, H. 2013 ECS Transactions. 1 ed. Electrochemical Society Inc., Vol. 58, p. 1489-1494 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen
Zirconium
Cathodes
Protective atmospheres
Voltammetry
1 Citations

Improving ORR activity of group 4 and 5 metal oxide-based cathodes for PEFCs

Ishihara, A., Yin, S., Suito, K., Uehara, N., Okada, Y., Kohno, Y., Matsuzawa, K., Mitsushima, S., Chisaka, M., Ohgi, Y., Matsumoto, M., Imai, H. & Ota, K. I. 2013 ECS Transactions. 1 ed. Electrochemical Society Inc., Vol. 58, p. 1495-1500 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cathodes
Oxides
Oxygen
Metals
Nitridation

Nano-sized titanium oxides as electrocatalyst for oxygen reduction reaction toward PEFC

Suito, K., Ishihara, A., Hayashi, T., Matsumoto, M., Arao, M., Kohno, Y., Matsuzawa, K., Imai, H., Mitsushima, S. & Ota, K. 2013 ECS Transactions. 47 ed. Electrochemical Society Inc., Vol. 58, p. 1-7 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Titanium oxides
Oxygen
Cathodes
Carbon nitride
Electrocatalysts

Stabilization and activation of zirconium oxide based electrocatalysts as PEFC cathode by re-heat treatment

Okada, Y., Ishihara, A., Matsumoto, M., Arao, M., Imai, H., Kohno, Y., Matsuzawa, K., Mitsushima, S. & Ota, K. 2013 ECS Transactions. 1 ed. Electrochemical Society Inc., Vol. 58, p. 1225-1231 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electrocatalysts
Zirconia
Durability
Heat treatment
Stabilization
1 Citations

Zirconium oxide-based cathode prepared by partial oxidation of carbonitrides as non-precious metal cathode for polymer electrolyte fuel cells

Ota, K. I., Ohgi, Y., Matsuzawa, K., Mitsushima, S. & Ishihara, A. 2013 Jan 1 ECS Transactions. 12 ed. Electrochemical Society Inc., Vol. 53, p. 1-8 8 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Carbon nitride
Cathodes
Zirconium
Fuel cells
Electrolytes
2012
2 Citations

Catalytic activity and stability of Ta compounds for oxygen reduction reaction

Mitsushima, S., Fujita, Y., Ishihara, A., Ohgi, Y., Matsuzawa, K., Matsumoto, M., Arao, M., Imai, H., Kohno, Y. & Otaa, K. 2012 Dec 1 ECS Transactions. 2 ed. Vol. 50, p. 1823-1829 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen
Electrocatalysts
Chronoamperometry
Carbon nitride
Tantalum
4 Citations

Highly active titanium oxide-based catalyst for oxygen reduction reaction for PEFC

Suito, K., Ishihara, A., Arao, M., Matsumoto, M., Imai, H., Kohno, Y., Matsuzawa, K., Mitsushima, S. & Ota, K. 2012 Dec 1 ECS Transactions. 2 ed. Vol. 50, p. 1777-1783 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Catalysts
Oxygen
Titanium oxides
Platinum
Pyrolysis
2 Citations

ORR activity of Nb oxide based catalyst prepared from Nb compound including C and N

Hara, K., Ishihara, A., Matsumoto, M., Arao, M., Imai, H., Kohno, Y., Matsuzawa, K., Mitsushima, S. & Ota, K. 2012 Dec 1 ECS Transactions. 2 ed. Vol. 50, p. 1769-1775 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Catalysts
Oxides
Carbon nitride
Oxygen
Metals
4 Citations

Surface reaction analysis of tantalum-oxide oxygen-reduction catalysts by using X-ray photoelectron spectroscopy

Matsumoto, M., Miyazaki, T., Fujieda, S., Ishihara, A., Ota, K. I. & Imai, H. 2012 ECS Transactions. 2 ed. Vol. 50, p. 1759-1767 9 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

X rays
Oxygen
Photoelectron spectroscopy
Catalysts
X ray photoelectron spectroscopy
8 Citations

Synthesis of highly active Zr oxide-based oxygen reduction electrocatalysts as PEFC cathode

Yin, S., Ishihara, A., Kohno, Y., Matsuzawa, K., Mitsushima, S., Ota, K. I., Matsumoto, M., Arao, M. & Imai, H. 2012 Dec 1 ECS Transactions. 2 ed. Vol. 50, p. 1785-1790 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen
Zirconium
Cathodes
Protective atmospheres
Oxides
2 Citations

Transition metal oxide based materials for cathode of polymer electrolyte fuel cells

Ota, K., Ohgi, Y., Matsuzawa, K., Mitsushima, S. & Ishihara, A. 2012 Nov 19 ECS Transactions. 2 ed. Vol. 45, p. 27-33 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxides
Cathodes
Carbon nitride
Fuel cells
Catalyst activity
2011

Factors for improvements of catalytic activity for zirconium oxide-based oxygen-reduction electrocatalysts

Ohgi, Y., Ishihara, A., Matsuzawa, K., Mitsushima, S., Ota, K., Matsumoto, M. & Imai, H. 2011 Dec 1 ECS Transactions. 1 ed. Vol. 41, p. 1225-1247 23 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen vacancies
Zirconia
Catalyst activity
Defects
Oxides

Origin of oxygen reduction activity on tantalum oxide-based compounds as non-platinum cathodes for pefc

Ishihara, A., Ohgi, Y., Matsuzawa, K., Mitsushima, S., Ota, K., Matsumoto, M. & Imai, H. 2011 EFC 2011 - Proceedings of the 4th European Fuel Cell Piero Lunghi Conference and Exhibition. ENEA, p. 275-276 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen
Oxygen vacancies
Cathodes
Oxidation
Carbon
2 Citations

Structural characterization of ORR active surface Niobium oxides on partially oxidized Nb carbonitrides

Matsumoto, M., Miyazaki, T., Fujieda, S., Ohgi, Y., Ishihara, A., Ota, K. I. & Imai, H. 2011 ECS Transactions. 32 ed. Vol. 35, p. 77-83 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen
Catalysts
Oxides
Oxygen vacancies
Absorption spectroscopy

Ta oxide and ZR oxide based materials for new cathode of PEFC

Ota, K., Ohgi, Y., Matuzawa, K., Mitsushima, S. & Ishihara, A. 2011 EFC 2011 - Proceedings of the 4th European Fuel Cell Piero Lunghi Conference and Exhibition. ENEA, p. 85-86 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cathodes
Oxides
Catalysts
Carbon nitride
Metals
2010
3 Citations

Catalytic activity of zirconium based cathode without platinum for oxygen reduction reaction

Ohgi, Y., Ishihara, A., Matsuzawa, K., Mitsushima, S., Ota, K., Matsumoto, M. & Imai, H. 2010 Dec 1 ECS Transactions. 1 PART 1 ed. Vol. 33, p. 609-624 16 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen
Zirconium
Carbon nitride
Catalyst activity
Oxygen vacancies

Electrocatalytic activity of Ta compound thin film for oxygen reduction reaction

Matsuzawa, K., Kikuchi, A., Ishihara, A., Mitsushima, S. & Ota, K. 2010 Dec 1 ECS Transactions. 23 ed. Vol. 28, p. 3-10 8 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen
Thin films
Partial pressure
Catalyst activity
Magnetron sputtering
2009
2 Citations

Catalytic activity of partially oxidized tantalum carbonitride for oxygen reduction reaction

Tamura, M., Ishihara, A., Tada, T., Matsuzawa, K., Mitsushima, S. & Ota, K. 2009 Nov 23 ECS Transactions. 24 ed. Vol. 16, p. 125-132 8 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen
Catalyst activity
Cathodes
Carbon nitride
Tantalum

Development of non-precious metal oxide cathode for polymer electrolyte fuel cell

Ota, K. I., Mitsushima, S., Matsuzawa, K. & Ishihara, A. 2009 EFC 2009 - Piero Lunghi Conference, Proceedings of the 3rd European Fuel Cell Technology and Applications Conference. ENEA, p. 115-116 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cathodes
Fuel cells
Catalysts
Oxides
Metals

Oxygen reduction reaction of partially oxidized tantalum carbonitride an non-platinum cathode for PEFC: Dependence of degree of oxidation of tantalum carbonitride on catalytic aactivity

Ota, K., Imai, H., Matsuzawa, K., Mitsushima, S. & Ishihara, A. 2009 Dec 1 ECS Transactions. 18 ed. Vol. 19, p. 51-57 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cathodes
Oxygen
X ray absorption spectroscopy
Carbon nitride
Tantalum

Synthesis of Ta-oxide based nano-sized cathode catalyst on highly ordered meso-porous carbon for PEM fuel cells

Shoyama, M., Tomimura, T., Okubo, Y., Nambu, H., Lin, M. L., Hara, K., Fukuoka, A., Ishihara, A. & Ota, K. I. 2009 ECS Transactions. 1 PART 2 ed. Vol. 25, p. 1903-1908 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Catalysts
Carbon
Fuel cells
Cathodes
Electrolytes
1 Citations

Tantalum oxide-based compounds as new cathodes without precious metals for PEFC

Ishihara, A., Imai, H., Matsuzawa, K., Mitsushima, S. & Ota, K. 2009 Dec 1 ECS Transactions. 1 PART 1 ed. Vol. 25, p. 175-180 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen
Catalyst activity
Cathodes
Tantalum oxides
Precious metals
4 Citations

Zirconium oxide-based compound as new cathode without platinum group metals for PEFC

Ohgi, Y., Ishihara, A., Matsuzawa, K., Mitsushima, S. & Ota, K. 2009 Dec 1 ECS Transactions. 1 PART 1 ed. Vol. 25, p. 129-139 11 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Carbon nitride
Zirconium
Oxygen
Fuel cells
Catalyst activity
2008
2 Citations

Efficiency of CO2 generation during the electrooxidation of ethanol on platinum with various roughness factors

Mitsushima, S., Takahashi, T., Ariffin, A., Matsuzawa, K., Ishihara, A. & Ota, K. I. 2008 Dec 1 ECS Transactions. 2 PART 2 ed. Vol. 16, p. 1253-1261 9 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Surface roughness
Platinum
Electrooxidation
Ethanol
Current density

Evaluation of environmental impact factor for hydrogen energy

Ota, K. I., Mitsushima, S. & Ishihara, A. 2008 Dec 1 17th World Hydrogen Energy Conference 2008, WHEC 2008. Vol. 1, p. 235-238 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

environmental impact
hydrogen
energy
4 Citations

Group 4 and 5 oxide-based compounds as new cathodes without platinum group metals for pefc

Ishihara, A., Tamura, M., Maekawa, Y., Ohgi, Y., Matsuzawa, K., Mitsushima, S. & Ota, K. 2008 Dec 1 ECS Transactions. 2 PART 1 ed. Vol. 16, p. 449-457 9 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen
Catalyst activity
Cathodes
Oxidation
Carbon nitride
3 Citations

Group 4 and 5 oxide-based compounds as new cathodes without platinum group metals for PEFC

Ota, K., Mitsushima, S. & Ishihara, A. 2008 Dec 1 ECS Transactions. 17 ed. Vol. 13, p. 161-169 9 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen
Catalyst activity
Cathodes
Oxidation
Fuel cells

Tantalum compounds as new non-platinum cathode for PEFC

Ishihara, A., Shibata, Y., Mitsushima, S., Kamiya, N. & Ota, K. 2008 Dec 22 ECS Transactions. 25 ed. Vol. 6, p. 329-340 12 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen
Oxidation
Catalyst activity
Cathodes
Electrodes
2007
5 Citations

Development of zirconium based non-platinum cathode for polymer electrolyte fuel cell

Ishihara, A., Doi, S., Liu, Y., Mitsushima, S., Kamiya, N. & Ota, K. I. 2007 Dec 1 Materials Science Forum. PART 2 ed. Vol. 539-543, p. 1379-1384 6 p. (Materials Science Forum; vol. 539-543, no. PART 2)

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen
Zirconium
Fuel cells
Catalyst activity
Cathodes
2006
6 Citations

Non-platinum cathode based on tantalum for PEFC

Kim, J. H., Ishihara, A., Mitsushima, S., Kamiya, N. & Ota, K. I. 2006 ECS Transactions. 1 ed. Vol. 3, p. 255-261 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxygen
Temperature
Catalyst activity
Cathodes
Physical properties
2005
2 Citations

Tantalumn nitride and oxynitride for new cathode of polymer electrolyte fuel cell

Ishihara, A., Doi, S., Liu, Y., Mitsushima, S., Kamiya, N. & Ota, K. 2005 Dec 1 ECS Transactions. 6 ed. Vol. 1, p. 51-60 10 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nitrides
Fuel cells
Cathodes
Electrolytes
Heat treatment
2 Citations

Zirconium nitride and oxynitride for new cathode of polymer electrolyte fuel cell

Doi, S., Liu, Y., Ishihara, A., Mitsushima, S., Kamiya, N. & Ota, K. 2005 Dec 1 ECS Transactions. 6 ed. Vol. 1, p. 17-25 9 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fuel cells
Cathodes
Electrolytes
Heat treatment
Oxygen
2004
1 Citations

Evaluation of oxygen electroreduction on metal oxide-supported platinum catalysts

Suzuki, Y., Nakagawa, T., Ishihara, A., Mitsushima, S., Kamiya, N. & Ota, K. I. 2004 Dec 1 Proceedings - Electrochemical Society. Vol. PV 2004-21, p. 148-158 11 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oxides
Platinum
Oxygen
Metals
Catalyst activity

Improvement of cathode materials for polymer electrolyte fuel cell

Ota, K. I., Ishihara, A., Lee, K., Nakagawa, T., Mitsushima, S. & Kamiya, N. 2004 Aug 30 2004 AIChE Spring National Meeting, Conference Proceedings. p. 515-519 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fuel cells
Cathodes
Catalyst activity
Electrolytes
Carbon

Improvement of cathode materials for polymer electrolyte fuel cell

Ota, K. I., Ishihara, A., Lee, K., Nakagawa, T., Mitsushima, S. & Kamiya, N. 2004 Jan 1 2004 AIChE Spring Meeting, Conference Proceedings.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fuel cells
Cathodes
Catalyst activity
Electrolytes
Oxygen
1 Citations

Transition metal carbides for new cathode material of polymer electrolyte fuel cell

Lee, K., Ishihara, A., Mitsushima, S., Kamiya, N. & Ota, K. I. 2004 Dec 1 Proceedings - Electrochemical Society. Vol. PV 2004-21, p. 213-221 9 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tungsten carbide
Carbides
Fuel cells
Cathodes
Electrolytes

Transition metal oxynitmdes for new cathode of polymer electroryte fuel cell

Ishihara, A., Lee, K., Doi, S., Mitsushima, S., Kamiya, N. & Ota, K. I. 2004 Dec 1 Proceedings - Electrochemical Society. Vol. PV 2004-21, p. 129-139 11 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nitrides
Oxygen
Sulfuric acid
Tantalum
Transition metals
2003

Exergy analysis of polymer electrolyte fuel cell systems using methanol

Ishihara, A., Mitsushima, S., Kamiya, N. & Ota, K. I. 2003 Dec 1 Fuel Cell Science, Engineering and Technology. Shah, R. K. & Kandlikar, S. G. (eds.). p. 301-306 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Exergy
Fuel cells
Methanol
Electrolytes
Polymers
1 Citations

Study on Morphological Properties and Mass Transport Parameters of ORR in Recast Ion-exchange Polymer Electrolyte Membranes

Lee, K., Ishihara, A., Mitsushima, S., Kamiya, N. & Ota, K. I. 2003 Dec 1 Fuel Cell Science, Engineering and Technology. Shah, R. K. & Kandlikar, S. G. (eds.). p. 241-243 3 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Temperature
Electrolytes
Solubility
Mass transfer
Membranes