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用改进的柠檬酸法合成了具有钙钛矿结构的LSGM(La0.9Sr0.1Ga0.85Mg0.15O3-δ)和Co掺杂的LSGMC8.5(La0.9Sr0.1(Ga0.9Co0.1)0.85Mg0.15O3-δ).并从XRD、DTA-TG曲线、交流阻抗谱、电导率、密度和化学稳定性等方面比较了LSGM和LSGMC8.5的性能.从而探讨了Co掺杂对于LSGM性能的影响.结果表明相对于LSGM,Co的掺杂使立方钙钛矿结构的形成温度由1400℃降低到1300℃左右,离子电导率由3.85×10-2上升到5.38×10-2S/cm,密度由理论密度的95%上升到99%.因此Co的掺杂使LSGM的各方面性能都有了一定的提高,LSGMC8.5比LSGM更适合做中温SOFC的电解质材料.

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