X-ray absorption and diffraction studies of La0.6Ca0.4CoO3 perovskite, a catalyst for bifunctional oxygen electrodes

被引：37
|
作者：
Haas, O [1 ]
Holzer, F
Müller, S
McBreen, JM
Yang, XQ
Sun, X
Balasubramanian, M
机构：
[1] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
[2] Brookhaven Natl Lab, Dept Mat Sci, Upton, NY 11973 USA
来源：
ELECTROCHIMICA ACTA | 2002年 / 47卷 / 19期
关键词：
bifunctional oxygen electrodes; zn/air cells; La0.6Ca0.4CoO3; perovskite; in-situ X-ray absorption; X-ray diffraction;
D O I：
10.1016/S0013-4686(02)00241-4
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The chemical stability of La0.6Ca0.4CoO3 perovskite as an electrocatalyst in bifunctional oxygen electrodes has been studied by exsitu and in-situ X-ray absorption spectroscopy and X-ray diffraction measurements. The catalyst was investigated ex-situ as a powder mixed with BN, and in-situ on carbon supports in bilayer air electrodes at different potentials in an electrochemical cell with an alkaline electrolyte. It was found to be stable for at least 1300 h in electrodes operated under the conditions of rechargeable Zn/air cells. Published by Elsevier Science Ltd.
引用
收藏
页码：3211 / 3217
页数：7
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