Effect of ceria on properties of yttrium-doped strontium titanate ceramics

被引：23
作者：
Koutcheiko, S [1 ]
Yoo, Y
Petric, A
Davidson, I
机构：
[1] Natl Res Council Canada, Inst chem Proc & Environm Technol, Ottawa, ON K1A 0R6, Canada
[2] McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON L8S 4L7, Canada
来源：
CERAMICS INTERNATIONAL | 2006年 / 32卷 / 01期
基金：
加拿大自然科学与工程研究理事会;
关键词：
sintering; X-ray methods; termal properties; perovskites;
D O I：
10.1016/j.ceramint.2004.12.009
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
This work reports the preparation and properties of the ceramic mixtures of the A-site deficient perovskite Sr0.94Y0.04TiO3 (SYT) with CeO2 in a range of ratios with a view to establishing their potential as anode materials for solid oxide fuel cells. Good electrical conductivity that decreased with increasing CeO2 content was observed on reduction in forming gas. The composition with 50 wt.% of CeO2 Showed the conductivity of 7.0 S/cm at 900 degrees C in forming gas. The thermal expansion of SYT-CeO2 ceramics in forming gas and in air were investigated in the range 25-900 degrees C at a ramping rate of 3 degrees C/min and thermal expansion coefficients were determined. The addition of ceria was found to have a positive influence on the catalytic behavior of SYT-CeO2 ceramics towards steam methane reforming. (C) 2005 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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收藏
页码：67 / 72
页数：6
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