Degradation phenomena in the cathode of a solid oxide fuel cell with an alloy separator

S. Taniguchi, M. Kadowaki, H. Kawamura, T. Yasuo, Y. Akiyama, Y. Miyake, T. Saitoh

研究成果: ジャーナルへの寄稿学術誌査読

279 被引用数 (Scopus)


A study is made of the cathode degradation phenomena in a solid oxide fuel cell that uses an alloy separator. Under the action of the discharge current, chromium diffuses from the alloy to the cathode and moves to the cathode/electrolyte interface. The cathode polarization increases in correlation with the intensity of chromium at the cathode/electrolyte interface. The increase in cathode polarization by the discharge current is due to chromium filling the pores at the cathode/electrolyte interface. This restricts diffusion of oxygen gas and decreases the number of electrode reaction sites. Chromium displacement at the cathode/electrolyte interface appears to be caused by the decrease in oxygen activity at the cathode/electrolyte interface.

ジャーナルJournal of Power Sources
出版ステータス出版済み - 5月 1995

!!!All Science Journal Classification (ASJC) codes

  • 再生可能エネルギー、持続可能性、環境
  • エネルギー工学および電力技術
  • 物理化学および理論化学
  • 電子工学および電気工学


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