稀土学报（英文版）
稀土學報（英文版）
희토학보（영문판）
JOURNAL OF RARE EARTHS
2015年
5期
519-523
,共5页
余良浩%陈永红%顾庆文%田冬%卢肖永%孟广耀%林彬
餘良浩%陳永紅%顧慶文%田鼕%盧肖永%孟廣耀%林彬
여량호%진영홍%고경문%전동%로초영%맹엄요%림빈
solid oxide fuel cell%cathode%perovskite%Sm0.2Ce0.8O1.9%rare earths
A layered perovskite oxide Y0.8Ca0.2BaCoFeO5+δ(YCBCF) was synthesized as a novel cathode material for intermedi-ate-temperature solid oxide fuel cells (IT-SOFCs) by citric acid-nitrates self-propagating combustion method. The phase and micro-structure of YCBCF were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The aver-age thermal expansion coefficient (TEC) of YCBCF was 14.6×10–6 K–1, which was close to other materials of SOFC at the range of RT–1000 oC. An open-circuit potential of 0.75 V and a maximum output power density of 426 mW/cm2 were obtained at 650 oC in a Sm0.2Ce0.8O1.9 (SDC)-based anode-supported SOFC by using humidified (~3%H2O) hydrogen as fuel and static air as oxidant. The results indicated that the YCBCF was a promising cathode candidate for IT-SOFCs.
