Protonic conduction in Zr-substituted BaCeO3

被引：665

作者：

Katahira, K ^{[1
]}

Kohchi, Y ^{[1
]}

Shimura, T ^{[1
]}

Iwahara, H ^{[1
]}

机构：

[1] Nagoya Univ, Ctr Intergrated Res Sci & Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan

来源：

SOLID STATE IONICS | 2000年 / 138卷 / 1-2期

关键词：

protonic conductor; BaCeO3; BaZrO3; chemical stability; hydrogen concentration cell; hydrogen pump;

D O I：

10.1016/S0167-2738(00)00777-3

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：

Zr-substituted BaCeO3 (BaCe0.9-xZrxY0.1O3-alpha) was synthesized and its electrical conduction behavior and chemical stability were investigated. Single phases were confirmed over the whole range of x values (0.0 less than or equal to x less than or equal to 0.9). These oxides exhibited pure protonic conduction in hydrogen-containing atmosphere while they showed protonic, oxide ionic and electronic mixed conduction under high oxygen partial pressure at elevated temperatures. The chemical stability against CO, increased with an increase in zirconium content, although the protonic conductivity decreased with increasing x. (C) 2000 Published by Elsevier Science B.V.

引用

页码：91 / 98

页数：8

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