采用柠檬酸/硝酸盐溶胶-凝胶法合成了La0.6Sr0.4Fe0.8Co0.2O3.XRD分析表明,所获粉体为单一相的钙钛矿结构;EDS分析证实,产物中各组成元素相对含量与原料配比一致;TEM观察显示,晶粒尺寸为100~200 nm.以La0.6Sr0.4Fe0.8Co0.2O3作为阴极材料,Ce0.8Gd0.2O1.9为电解质,NiO/Ce0.8GD0.2O1.9为阳极材料组成单片固体氧化物燃料电池,测试了其输出电性能.结果表明,在650 ℃工作温度,工作电压为0.5 V时,电流密度为0.45 A/cm2,输出功率密度为0.23 W/cm2.XRD分析表明,阴极La0.6Sr0.4Fe0.8Co0.2O3和电解质Ce0.8Gd0.2O1.9之间未发生固相反应.
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