Oxygen-ion conductivity of BaO- and MgO-doped LaGaO3 electrolytes

被引：28

作者：

Kim, S

Chun, MC

Lee, KT

Lee, HL ^{[1
]}

机构：

[1] Yonsei Univ, Dept Ceram Engn, Seoul 120749, South Korea

[2] Yonsei Univ, Engn Res Inst, Seoul 120749, South Korea

[3] Res Inst Ind Sci & Technol, Pohang 790330, South Korea

来源：

JOURNAL OF POWER SOURCES | 2001年 / 93卷 / 1-2期

关键词：

ceramic fuel cell; LaGaO3; electrolyte; oxygen-ion conductivity; association energy;

D O I：

10.1016/S0378-7753(00)00567-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 oxygen-ion conductivity of LaGaO3 electrolytes doped with BaO and MgO is studied. Curved behaviour of the oxygen ion conductivity observed in the Arrhenius plot. Therefore, the activation energy in the low-temperature region is higher than that in the high-temperature region. The dopant cation-oxygen vacancy association, especially the Mg-Ga' - V" cluster, may contribute to increase the activation energy in the low-temperature region. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：279 / 284

页数：6

共 22 条

[1]

BAURELE JE, 1969, J PHYS CHEM SOLIDS, V30, P565

[2] OXYGEN-ION MIGRATION IN PEROVSKITE-TYPE OXIDES [J].