Ionic conduction in BaxCe0.8Er0.2O3-α

被引：37

作者：

Qiu, LG

Ma, GL ^{[1
]}

Wen, DJ

机构：

[1] Suzhou Univ, Sch Chem & Chem Engn, Suzhou 215006, Peoples R China

[2] Yancheng Teachers Coll, Dept Chem, Yancheng 224002, Peoples R China

[3] Suzhou Univ, Sch Mat Engn, Suzhou 215006, Peoples R China

来源：

SOLID STATE IONICS | 2004年 / 166卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

BaxCe0.8Er0.2O3-alpha; protonic conduction; gas concentration cell; hydrogen pump; nonstoichiometry;

D O I：

10.1016/j.ssi.2003.09.020

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：

BaxCe0.8Er0.2O3-x (x = 0.98-1.03) solid electrolytes were synthesized by high temperature solid-state reaction. X-ray diffraction (XRD) patterns showed that the specimens were a single perovskite-type orthorhombic phase. The conduction properties of the specimens were studied electrochemically in the temperature range of 600 - 1000 degreesC. The influence of nonstoichiometry in the specimens with x not equal 1 on conduction properties was investigated and compared with that in the specimen with x = 1. These three specimens showed a good protonic conduction under wet hydrogen, a mixed conduction of oxide-ion and electronic hole under dry higher oxygen partial pressure, and a mixed conduction of proton, oxide-ion and electronic hole under wet higher oxygen partial pressure. Both of the protonic and oxide-ionic conductivities increased with increasing barium content in the specimens under wet hydrogen and dry air, respectively. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：69 / 75

页数：7

共 15 条

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