La_l-xSr_xCO_l-yFe_yO_3 perovskite-type composite oxides is a wonderful mixedelectrical-ionic conductor, characteristic of good thermal and chemical stability,is a potential candidate for SOFC.

• La_l-xSr_xCo_l-yFe_y0_3钙钛矿复合氧化物是一种优异的电子-离子混合导体，且具有良好的热和化学稳定性，可作为固体氧化物燃料电池的阴极材料。