Composite Cathode Bi1.14Sr0.43O2.14-Ag for Intermediate-temperature Solid Oxide Fuel Cells

被引：0
|
作者：
高展
张萍
机构：
[1] Wuhan 430074
[2] Faculty of Material Science and Chemical Engineering China University of Geosciences
来源：
Journal of Wuhan University of Technology(Materials Science) | 2008年 / 03期
基金：
中国国家自然科学基金;
关键词：
solid oxide fuel cells(SOFCs); composite cathode; strontium stabilized bismuth oxide(SSB); samaria doped ceria(SDC);
D O I：
暂无
中图分类号：
TB33 [复合材料];
学科分类号：
0805 ; 080502 ;
摘要：
Composites consisting of strontium stabilized bismuth oxide(Bi 1.14 Sr 0.43 O 2.14 ,SSB)and silver were investigated as cathodes for intermediate-temperature solid oxide fuel cells with doped ceria electrolyte. There were no chemical reactions between the two components.The microstructure of the interfaces between composite cathodes and Ce 0.8 Sm 0.2 O 1.9 (SDC)electrolytes was examined by scanning electron microscopy(SEM). Impedance spectroscopy measurements show that the performance of cathode fired at 700℃is the best.When the content of Ag 2 O is 70 wt%,polarization resistance values for the SSB-Ag cathodes are as low as 0.2Ωcm2 at 700℃and 0.29Ωcm2 at 650℃.These results are much smaller than some of other reported composite cathodes on doped ceria electrolyte and indicate that SSB-Ag composite is a potential cathode material for intermediate temperature SOFCs.
引用
收藏
页码：350 / 353
页数：4
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