Grain boundary conductivity enhancement in ceria-gadolinia solid solutions

被引：0

作者：

Ralph, JM ^{[1
]}

Kilner, JA ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, London SW7 2BP, England

来源：

PROCEEDINGS OF THE FIFTH INTERNATIONAL SYMPOSIUM ON SOLID OXIDE FUEL CELLS (SOFC-V) | 1997年 / 97卷 / 40期

关键词：

D O I：

暂无

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrical conductivity of ceria-gadolinia (CGO) with small additions of calcium have been studied in an attempt to improve the grain boundary conductivity. The results show that a large increase in the grain boundary conductivity is obtained, which is attributed to a higher ionic conductivity calcium phase at the grain boundary. The best total conductivity was found for a 9mol% Gd-1mol% Ca sample. D.C. Conductivity results taken at selected pO(2) at 750 degrees C, showed the conductivity to be ionic at high pO(2)'s and electronic at pO(2)'s lower than 10(-15) atm.

引用

页码：1021 / 1030

页数：10

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