Perovskite cathodes for solid oxide fuel cells based on ceria electrolytes

被引：92

作者：

Godickemeier, M ^{[1
]}

Sasaki, K ^{[1
]}

Gauckler, LJ ^{[1
]}

Riess, I ^{[1
]}

机构：

[1] TECHNION ISRAEL INST TECHNOL,DEPT PHYS,IL-32000 HAIFA,ISRAEL

来源：

SOLID STATE IONICS | 1996年 / 86-8卷

关键词：

mixed conductors; cathodes; solid oxide fuel cells;

D O I：

10.1016/0167-2738(96)00149-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The ionic current-overpotential characteristics of cathodes on ceria-based electrolytes have been evaluated by galvanostatic current-interruption measurements under fuel cell operating conditions. The effect of either mixed ionic electronic conductivity or high oxygen diffusivity on the oxygen reduction kinetics was investigated. La0.8Sr0.2MnO3 served as a model substance for cathodes with a high activity for oxygen reduction and a low oxygen ionic conductivity. The behaviour of La0.8Sr0.2MnO3 is compared to that of La0.84Sr0.16CoO3 which shows high activity for oxygen reduction and high oxygen diffusivity.

引用

页码：691 / 701

页数：11

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