Ba0.5Sr0.5Co0.8Fe0.2O3-δ-La0.6Sr0.4Co0.8Fe0.2O3-δ COMPOSITE CATHODE FOR SOLID OXIDE FUEL CEL

被引：11
作者：
Mosialek, M. [1 ]
Kedra, A. [1 ]
Krzan, M. [1 ]
Bielanska, E. [1 ]
Tatko, M. [1 ]
机构：
[1] J Haber Inst Catalysis & Surface Chem PAS, Krakow, Poland
来源：
ARCHIVES OF METALLURGY AND MATERIALS | 2016年 / 61卷 / 03期
关键词：
barium strontium cobalt ferrite; lanthanum strontium cobalt ferrite; solid oxide fuel cell; oxygen reduction reaction; electrochemical impedance spectroscopy; SILVER-MODIFIED BA0.5SR0.5CO0.8FE0.2O3-DELTA; ELECTROCHEMICAL PERFORMANCE; ELECTROLESS DEPOSITION; IT-SOFCS; TEMPERATURE; LA0.6SR0.4CO0.2FE0.8O3-DELTA; CONDUCTIVITY; IMPEDANCE; SYSTEM; CERIA;
D O I：
10.1515/amm-2016-0243
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Composite cathodes contain Ba0.5Sr0.5Co0.8Fe0.2O3-delta and La0.6Sr0.4Co0.8Fe0.2O3-delta were tested in different configuration for achieving cathode of area specific resistance lower than Ba0.5Sr0.5Co0.8Fe0.2O3-delta and La0.6Sr0.4Co0.8Fe0.2O3-delta cathodes. Electrodes were screen printed on samaria-doped ceria electrolyte half-discs and tested in the three electrode setup by the electrochemical impedance spectroscopy. Microstructure was observed by scanning electron microscopy. The lowest area specific resistance 0.46 and 2.77 W cm(-2) at 700 degrees C and 600 degrees C respectively revealed composite cathode contain Ba0.5Sr0.5Co0.8Fe0.2O3-delta and La0.6Sr0.4Co0.8Fe0.2O3-delta in 1:1 weight ratio. The area specific resistance of this cathode is characterized by the lowest activation energy among tested cathodes.
引用
收藏
页码：1137 / 1141
页数：5
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