Electrochemical permeability of La1-xSrxCoO3-δ materials

被引：36

作者：

Figueiredo, FM ^{[1
]}

Marques, FMB ^{[1
]}

Frade, JR ^{[1
]}

机构：

[1] Univ Aveiro, Dept Engn Ceram & Vidro, P-3810 Aveiro, Portugal

来源：

SOLID STATE IONICS | 1998年 / 111卷 / 3-4期

关键词：

electrochemical permeability; lanthanum cobaltate; ionic conductivity; LaCoO3; La0.7Sr0.3CoO3-delta;

D O I：

10.1016/S0167-2738(98)00192-1

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：

Dense disks of La1-xSrxCoO3-delta materials were prepared and characterized by electrochemical permeability experiments. Our results confirm that these materials possess relatively high ionic conductivity, and this is greatly enhanced by Sr additions. The ionic conductivity of these materials at temperatures of about 1000 degrees C may exceed the conductivity of the most widely used electrolyte materials. However, the permeability experiments could not be fitted by a relatively simple model behaviour derived from the expected defect chemistry, in which the electrode overpotentials are neglected. Significant overpotential contributions are thus expected. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：273 / 281

页数：9

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