SrFe0.7Cu0.2Mo0.1O3-δ-Ce0.9Gd0.1O2复合阴极的制备

被引：0
|
作者：
杨鹏 [1 ]
隋静 [1 ]
董立峰 [1 ]
机构：
[1] 青岛科技大学材料科学与工程学院
来源：
青岛科技大学学报(自然科学版) | 2017年 / 38卷 / 06期
关键词：
中温固体氧化物燃料电池; 复合阴极; 电化学性能;
D O I：
10.16351/j.1672-6987.2017.06.009
中图分类号：
TM911.4 [燃料电池];
学科分类号：
0808 ;
摘要：
采用溶胶-凝胶法制备出SrFeCuMoO(SFCM)阴极粉体及CeGdO(CGO)电解质粉体,并将二者以质量比为7∶3的比例进行机械研磨,得到SFCM-CGO复合阴极。利用X-射线衍射仪(XRD)、扫描电子显微镜(SEM)对材料进行性能表征。结果表明:复合材料在800℃下煅烧1h后未发生任何化学反应,且与电解质接触良好。将阴极SFCM和复合阴极SFCM-CGO分别在电解质CGO上组装成三电极体系半电池,采用交流阻抗法和线性扫描法测试不同温度下的电化学性能。结果如下:随着测试温度的升高,两种半电池的电化学性能均有所提高;700℃时,半电池SFCM-CGO/CGO的面积比界面电阻为0.364Ω·cm2,明显小于半电池SFCM/CGO的面积比界面电阻1.062Ω·cm2;相同温度下,电压为0.8V时,半电池SFCM-CGO/CGO的极化电流密度为0.418A·cm-2,比半电池SFCM/CGO的极化电流密度高出0.236A·cm-2。
引用
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页码：56 / 60
页数：5
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