Initial damage to anode microstructure caused by partial redox cycles during electrochemical oxidation

Toru Hatae, Yoshio Matsuzaki, Satoshi Yamashita, Yohtaro Yamazaki

研究成果: ジャーナルへの寄稿学術誌査読

15 被引用数 (Scopus)

抄録

Cell damage caused by redox cycling in which the anode is electrochemically oxidized was investigated in order to detect the initial damage before cell failure. In order to prevent catastrophic destruction of the cell, partial electrochemical oxidation was used in the redox treatment and controlled at a very low degree of oxidation of the anode. As a result, the cell performance degraded because of the partial redox cycles without a decrease in open-circuit voltage, and no mechanical damage was observed in the electrolyte. However, microcracks at the interfaces between ScSZ particles and Ni particles in the anode layer in active cell area were observed. These results indicated that the microcracks in the anode layer were the initial damage caused by partial redox cycles in which the anode was electrochemically oxidized and caused the degradation of the cell performance.

本文言語英語
ページ(範囲)B609-B613
ジャーナルJournal of the Electrochemical Society
156
5
DOI
出版ステータス出版済み - 2009
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 再生可能エネルギー、持続可能性、環境
  • 表面、皮膜および薄膜
  • 電気化学
  • 材料化学

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