分别采用丝网印刷和浸渍法两种工艺制备了固体氧化物电解池(SOEC)铁酸锶镧(LSF)基复合阳极,通过XRD、TEM、SEM等手段对LSF粉体和复合材料的相结构和微观结构进行了分析,利用电位扫描以及电化学阻抗谱(EIS)比较了这些复合阳极在SOEC工作温度800℃时的电化学性能.结果表明,采用共沉淀-共沸燕馏(CP-AD)合成的LSF20(La0.8Sr0.2FeO3-δ)粉体粒径约为20~30nm,其都分布在氧化锆(YSZ)陶瓷骨架上;800℃时,浸渍法工艺制备的LSF20-YSZ复合阳极在0.1V极化过电位下的极化电流值为0.38~0.49A/cm2,约为丝网印刷工艺制备的电化学性能的2~2.5倍.
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