Effect of SO2 on Performance of Solid Oxide Fuel Cell Cathodes

被引：0
作者：
Wang De-jun [1 ]
Leng Jing [2 ]
机构：
[1] Changchun Univ, Coll Continuing Educ, Changchun 130022, Peoples R China
[2] Changchun Univ Technol, Coll Basic Sci, Changchun 130012, Peoples R China
来源：
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES | 2012年 / 28卷 / 05期
基金：
中国国家自然科学基金;
关键词：
SO2; (La0.7Sr0.3)MnO3(LSM); La0.6Sr0.4Co0.2Fe0.8O3(LSCF); Solid oxide fuel cell(SOFC); Durability; ELECTRICAL-PROPERTIES; WATER-VAPOR; DEGRADATION;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Effects of SO2 in ambient air on the performance and durability of solid oxide fuel cell(SOFC) cathode were evaluated by galvanostatic measurement. Comparison between two cathode materials was made to consider the cathode degradation mechanisms. The degradation performance is associated with a slow decomposition of the La0.6Sr0.4Co0.2Fe0.8O3(LSCF) due to the segregation of strontium oxide. Negligible deterioration for (La0.7Sr0.3)MnO3 (LSM) cathode was caused by SO2 poisoning under a current density of 200 mA/cm(2). Metal sulphate formation may explain a slight deterioration under increasing high the concentration of SO2. It was verified that the poisoning mechanism for the two cathode materials resulted from the gradual decomposition of the cathode materials.
引用
收藏
页码：866 / 868
页数：3
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