Synthesis and characterization of (Gd, Y)-doped ceria electrolytes for solid oxide fuel cell

被引：0
|
作者：
Liu, Zhihui [1 ]
Guan, Xiangfeng [1 ]
Zhou, Heping [1 ]
机构：
[1] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
来源：
HIGH-PERFORMANCE CERAMICS IV, PTS 1-3 | 2007年 / 336-338卷
关键词：
ceria; solid oxide fuel cell; GNP; AC impedance;
D O I：
10.4028/www.scientific.net/KEM.336-338.395
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：
Ceria electrolytes co-doped with Gd3+ and Y3+ (Ce0.8Gd0.2-xYxO1.9) were synthesized by GNP. The crystal structures, lattice parameters and crystallite sizes were determined by XRD. The morphology of the powders was observed by TEM. Sintered at 1250 degrees C for 4 h, all die-pressed ceria pellets achieved densities higher than 95% of theoretical values. The ionic conductivities were measured using AC impedance technique and Ce0.8Gd0.05Y0.15O1.9 showed a higher ionic conductivity than those of other compositions at 500-750 degrees C, indicating that it is an attractive electrolyte material for IT-SOFC.
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页码：395 / +
页数：2
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