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

Ken Ichiro Ota, Makoto Hamazaki, Koichi Matsuzawa, Shigenori Mitsushima, Akimitsu Ishihara

Abstract

Powders of Ti and Nb metal compounds (metal complexes that contain nitrogen) were mixed and heat-treated at 1050°C in the H2/Ar gas mixtures to obtain specimens with different oxidation state. An appropriate oxidation is essential to have a definite catalytic activity for the ORR. The onset potentials of partially oxidized Ti and Nb oxide mixture with the electron conductive oxide support had reached over 1.1 V vs RHE that is more than that of commercial Pt-C. The active point of our materials might have a better activity compared to Pt. Potential cycling test was conducted between 1.0 V and 1.5 V using triangler wave, and between 0.6 V and 1.0 V using rectangular wave, respectively. We have not detected the decay of activity in both cases even at 80°C, although the current was small.

Original languageEnglish
Title of host publicationECS Transactions
PublisherElectrochemical Society Inc.
Pages13-21
Number of pages9
Volume69
Edition17
ISBN (Print)9781607685395
DOIs
StatePublished - 2015
Externally publishedYes
EventSymposium on Polymer Electrolyte Fuel Cells 15, PEFC 2015 - 228th ECS Meeting - Phoenix, United States

Other

OtherSymposium on Polymer Electrolyte Fuel Cells 15, PEFC 2015 - 228th ECS Meeting
CountryUnited States
CityPhoenix
Period15/10/1115/10/15

Fingerprint

Oxides
Oxidation
Electrons
Metals
Metal complexes
Gas mixtures
Catalyst activity
Cathodes
Nitrogen
Powders

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Ota, K. I., Hamazaki, M., Matsuzawa, K., Mitsushima, S., & Ishihara, A. (2015). Development of group 4 and 5 metal oxide cathode with electron conductive oxide. In ECS Transactions. (17 ed., Vol. 69, pp. 13-21). Electrochemical Society Inc.. DOI: 10.1149/06917.0013ecst

Development of group 4 and 5 metal oxide cathode with electron conductive oxide. / Ota, Ken Ichiro; Hamazaki, Makoto; Matsuzawa, Koichi; Mitsushima, Shigenori; Ishihara, Akimitsu.

ECS Transactions. Vol. 69 17. ed. Electrochemical Society Inc., 2015. p. 13-21.

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

Ota, KI, Hamazaki, M, Matsuzawa, K, Mitsushima, S & Ishihara, A 2015, Development of group 4 and 5 metal oxide cathode with electron conductive oxide. in ECS Transactions. 17 edn, vol. 69, Electrochemical Society Inc., pp. 13-21, Symposium on Polymer Electrolyte Fuel Cells 15, PEFC 2015 - 228th ECS Meeting, Phoenix, United States, 11-15 October. DOI: 10.1149/06917.0013ecst
Ota KI, Hamazaki M, Matsuzawa K, Mitsushima S, Ishihara A. Development of group 4 and 5 metal oxide cathode with electron conductive oxide. In ECS Transactions. 17 ed. Vol. 69. Electrochemical Society Inc.2015. p. 13-21. Available from, DOI: 10.1149/06917.0013ecst

Ota, Ken Ichiro; Hamazaki, Makoto; Matsuzawa, Koichi; Mitsushima, Shigenori; Ishihara, Akimitsu / Development of group 4 and 5 metal oxide cathode with electron conductive oxide.

ECS Transactions. Vol. 69 17. ed. Electrochemical Society Inc., 2015. p. 13-21.

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

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