Structural and electrochemical properties of yttrium-doped barium zirconate by addition of CuO

被引：110

作者：

Gao, Dongyun ^{[1
]}

Guo, Ruisong ^{[1
]}

机构：

[1] Tianjin Univ, Key Lab Adv Ceram & Machining Technol, Minist Educ, Tianjin 300072, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 493卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Ceramics; Sintering; Solid state reactions; Microstructure; Ionic conduction; Fuel cells; GRAIN-BOUNDARY CONDUCTIVITY; ELECTRICAL-CONDUCTIVITY; PROTON CONDUCTIVITY; CHEMICAL-STABILITY; FUEL-CELLS; CERAMICS; CONDUCTORS; SPRAY;

D O I：

10.1016/j.jallcom.2009.12.082

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 influences of CuO doping on the sintering behavior, phase formation and electrochemical properties of yttrium-doped barium zirconate were investigated in this study. Unmodified yttrium-doped barium zirconate was difficult to densify. 1-2 mol% CuO can markedly enhance the sinterability of yttrium-doped barium zirconate. No CuO was detected in the CuO-modified samples, which suggested that the CuO might dissolve into the perovskite lattice structure. The electrical conductivity of 1 mol% CuO-modified yttrium-doped barium zirconate was close to that of unmodified one at the testing temperatures ranging from 500 degrees C to 800 degrees C in moisture-saturated hydrogen. Electromotive force measurements under fuel cell conditions revealed that the ionic transport number of CuO-modified yttrium-doped barium zirconate was large enough to apply the material as electrolyte in solid oxide fuel cell. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：288 / 293

页数：6

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