A mixed proton, oxygen ion, and electron conducting cathode for SOFCs based on oxide proton conductors
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- 作者：Lei Yang ; Ze Liu ; Shizhong Wang ; YongMan Choi ; Chendong Zuo ; Meilin Liu
- 关键词：BZCY ; Composite cathode ; Electrochemical performance ; Stability
- 刊名：Journal of Power Sources
- 出版年：2010
- 出版时间：15 January 2010
- 年：2010
- 卷：195
- 期：2
- 页码：471-474
- 全文大小：699 K
文摘
A composite cathode, consisting of Ba(Zr0.1Ce0.7Y0.2)O3−δ (BZCY) and La0.6Sr0.4Co0.2Fe0.8O3−δ (LSCF), has shown high catalytic activity toward oxygen reduction, demonstrating a peak power density of 855 mW cm−2 at 750 °C. The chemical compatibility between BZCY and LSCF is excellent since there was no evidence of chemical reaction between the two after being fired at 1100 °C for 10 h. The stability of the composite cathode is further shown in single cells operated at 750 and 600 °C for 100 h without observable degradation in performance.