Reversible solid state Fe-air rechargeable battery using LaGaO3 based oxide ion conducting electrolyte

研究成果: 著書/レポートタイプへの貢献会議での発言

抜粋

The combination of solid oxide fuel cell technology with Fe-air battery concept was proposed by using H2/H2O as a redox mediator and LaGaO3 based oxide for electrolyte. Since large internal resistance and large degradation during charge and discharge cycles are observed on anode, improvement in discharge potential and cycle stability are strongly required by improving stability of anode. In this study, cermet anode consisting of Ni-Fe alloy combined with oxide ion conductor was investigated. It was found that by using cermet anode of Ni-Fe combined with Ce0.6Mn0.3Fe0.1O2 (CMF), the observed energy density of the cell is improved to be 1109 Wh/Kg-Fe at 10 mA/cm2, 873 K, which is about 92% of the theoretical energy density assuming the formation of Fe3O4 (1290 Wh/Kg-Fe). Cycle stability was also much improved on the cell using Ni-Fe-CMF anode comparing with that of Ni-Fe metal because of suppressed aggregation of Ni by mixing with CMF. Electrochemical charge-discharge measurement at 773 K showed excellent cycle stability over 30 cycles with high energy density (Round trip efficiency is higher than 80%). The excellent performance and stability with operating at lower temperature promise this Fe-air solid oxide battery as the next generation energy storage device for averaging electricity and electric vehicle.

元の言語英語
ホスト出版物のタイトルTHERMEC 2013
編集者B. Mishra, Mihail. Ionescu, T. Chandra
出版者Trans Tech Publications Ltd
ページ1680-1685
ページ数6
ISBN(印刷物)9783038350736
出版物ステータス出版済み - 1 1 2014
イベント8th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2013 - Las Vegas, NV, 米国
継続期間: 12 2 201312 6 2013

出版物シリーズ

名前Materials Science Forum
783-786
ISSN(印刷物)0255-5476
ISSN(電子版)1662-9752

その他

その他8th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2013
米国
Las Vegas, NV
期間12/2/1312/6/13

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • これを引用

    Ishihara, T., Inoishi, A., & Ida, S. (2014). Reversible solid state Fe-air rechargeable battery using LaGaO3 based oxide ion conducting electrolyte. : B. Mishra, M. Ionescu, & T. Chandra (版), THERMEC 2013 (pp. 1680-1685). (Materials Science Forum; 巻数 783-786). Trans Tech Publications Ltd.