SOFC钙钛矿型阴极的性能优化及研究进展

Performance Optimization and Research Progress of SOFC Perovskite Cathode

钙钛矿结构氧化物因其优异的MIEC特性和催化性能,以及具有化学组成的选择灵活性和良好的稳定性等优点,成为最有前途和应用前景的固体氧化物燃料电池(SOFC)阴极材料。目前,SOFC的发展趋势是中低温化。但是,随着电池操作温度的降低,阴极极化损耗急剧增加,电池性能随之下降。考虑到中低温SOFC对阴极材料的要求,钙钛矿型阴极的催化活性仍然较低。因此,钙钛矿型阴极的性能优化正在成为新的研究热点。文中综述了近年来钙钛矿阴极的性能优化研究的新进展,着重论述了元素掺杂、形貌调控以及浸渍改性等方式对钙钛矿阴极电化学性能的优化效果。

Perovskite structure oxide has become the most promising solid oxide fuel cell(SOFC)cathode material because of its excellent MIEC characteristics and catalytic performance,as well as the flexibility of chemical composition selection and great stability.At present,the development trend of SOFC is to lower the operating temperature.However,as the operating temperature of the cell decreases,the cathode polarization loss increases sharply,and the cell performance decreases accordingly.Taking into account the requirements of medium and low temperature SOFC for cathode materials,the catalytic activity of perovskite-type cathodes is still unsatisfactory.Therefore,the performance optimization of perovskite cathodes is becoming a new research hotspot.This paper reviews the recent progress in the performance optimization research of perovskite cathodes,and focuses on the optimization effects of element doping,morphology adjustment and impregnation modification on the electrochemical performance of perovskite cathodes.