Microstructures and electrolytic properties of yttrium-doped ceria electrolytes: Dopant concentration and grain size dependences

被引：108
|
作者：
Ou, Ding Rong
Mori, Toshiyuki
Ye, Fei
Takahashi, Motoi
Zou, Jin
Drennan, John
机构：
[1] Natl Inst Mat Sci, Fuel Cell Mat Ctr, Tsukuba, Ibaraki 3050044, Japan
[2] Univ Queensland, Sch Engn, St Lucia, Qld 4072, Australia
[3] Univ Queensland, Ctr Microscopy & Microanal, St Lucia, Qld 4072, Australia
来源：
ACTA MATERIALIA | 2006年 / 54卷 / 14期
基金：
澳大利亚研究理事会;
关键词：
solid electrolyte; electrical properties; microstructures; TEM; yttrium-doped ceria;
D O I：
10.1016/j.actamat.2006.04.003
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructures and electrolytic properties of YxCe1-xO2-x/2 (x = 0.10-0.25) electrolytes with average grain size in the range 90 nm-1.7 mu m were systematically investigated. Through detailed transmission electron microscopy characterization, nanosized domains were observed. The relationship of the domains, the doping level and grain sizes were determined, and their impacts on the electrolytic properties were systematically studied. It was found that the formation of domains has a negative impact on the electrolytic properties, so that electrolytic properties can be adjusted through careful control of domain formation, doping level and grain size. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：3737 / 3746
页数：10
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