YBaCo2O5+δ as a new cathode material for zirconia-based solid oxide fuel cells

被引：41
|
作者：
Liu, Yi [1 ]
机构：
[1] Guizhou Univ, Coll Sci, Guiyang 550003, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 477卷 / 1-2期
关键词：
Fuel cells; Oxide materials; Solid state reaction; Electrical transport; Microstructure; TRANSPORT-PROPERTIES; ELECTROLYTES;
D O I：
10.1016/j.jallcom.2008.11.010
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：
Microstructure, thermal expansion and electrical conductivity of YBaCo2O5+delta cathode material was studied for solid oxide fuel cell (SOFC) based on yttria-stabilized zirconia (YSZ) electrolytes. YBaCo2O5+delta exhibits metallic conduction behavior and the conductivity of sigma = 153-35 S/cm from 100 to 800 degrees C was observed. Thermal expansion of sample shows a linear characteristics and the average thermal expansion coefficient (TEC) is about 1.45 x 10(-5)/K in the temperature range of 200-800 degrees C. YBaCo2O5+delta-Ag composite cathode was prepared and applied onto YSZ electrolyte. The microstructural and electrochemical characterizations of obtained electrode-electrolyte sample were examined. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：860 / 862
页数：3
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