Oxygen nonstoichiometry and cathodic property of Ce0.6Mn0.3Fe0.1O2-δ for high temperature steam electrolysis cell using LaGaO3-based oxide electrolyte

Kohei Hosoi, Takaaki Sakai, Shintaro Ida, Tatsumi Ishihara

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 被引用数 (Scopus)

抄録

Steam electrolysis was studied by using a new oxide cathode of Ce0.6Mn0.3Fe0.1O2-δ (CMF). It was found that this cathode showed almost the same performance as a conventional Ni-based cathode without H2 flow, and H2 generation rate obeyed the Faraday's law at 900-700°C. By XRD measurements after operation, CMF phase was hardly changed after steam electrolysis. A long-term durability test was operated, and it revealed that CMF cathode showed good stability over 90 h at 800°C. The impedance spectra were measured under applied DC bias potentials. These revealed that polarization resistance and ohmic resistance decreased with increasing DC bias potential. This decrease of ohmic resistance was related to the increase in electronic conductivity of CMF. CMF was n-type semiconductor and the electronic conductivity of CMF increased with decreasing oxygen partial pressure.

本文言語英語
ホスト出版物のタイトルSolid Oxide Fuel Cells 14, SOFC 2015
編集者S. C. Singhal, K. Eguchi
出版社Electrochemical Society Inc.
ページ3315-3322
ページ数8
1
ISBN(電子版)9781607685395
DOI
出版ステータス出版済み - 1 1 2015
イベント14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage - Glasgow, 英国
継続期間: 7 26 20157 31 2015

出版物シリーズ

名前ECS Transactions
番号1
68
ISSN(印刷版)1938-6737
ISSN(電子版)1938-5862

その他

その他14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage
国/地域英国
CityGlasgow
Period7/26/157/31/15

All Science Journal Classification (ASJC) codes

  • 工学(全般)

フィンガープリント

「Oxygen nonstoichiometry and cathodic property of Ce<sub>0.6</sub>Mn<sub>0.3</sub>Fe<sub>0.1</sub>O<sub>2-δ</sub> for high temperature steam electrolysis cell using LaGaO<sub>3</sub>-based oxide electrolyte」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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