采用凝胶浇注法合成中温固体氧化物燃料电池(IT-SOFC)阴极材料Sm0.5Sr0.4Ca0.1CoO3(SSCC).利用差热-热重(TG-DTA)、X射线衍射(XRD)、扫描电子显微镜(SEM)、热膨胀、电导率以及交流阻抗谱等技术研究SSCC的结构和性能.结果表明:SSCC与电解质Sm0.2Ce0.8O1.9(SDC)具有良好的化学相容性,电极在1 150℃煅烧4h后,与SDC电解质可形成良好的接触界面；SSCC的电导率在400～800℃达到400S/cm以上,50～800℃SSCC阴极的平均热膨胀系数为16.31×10-6K-1,SSCC的极化电阻较小,700℃时仅为0.13Ω·cm2,预示其可作为IT-SOFC较为理想的阴极备选材料.
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