Characterization of Ce0.9Gd0.1O1.95 powders synthesized by spray drying

被引：8
作者：
Blennow, Peter [1 ]
Chen, Weiwu [1 ]
Lundberg, Mats [1 ]
Menon, Mohan [1 ]
机构：
[1] Tech Univ Denmark, Fuel Cells & Solid State Chem Div, Riso Natl Lab Sustainable Energy, DK-4000 Roskilde, Denmark
来源：
CERAMICS INTERNATIONAL | 2009年 / 35卷 / 07期
关键词：
Powders: Chemical Preparation; CeO2; Fuel Cells; Electrodes; CERIUM OXIDE; DOPED CEO2; CERAMICS; SURFACE;
D O I：
10.1016/j.ceramint.2009.04.003
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：
Ce0.9Gd0.1O1.95 powders were synthesized by spray drying and successive calcinations. The phase purity, BET surface area, and particle morphology of as-sprayed and calcined powders were characterized. After calcination above 300 degrees C, the powders were single phase and showed a BET surface area of 68 m(2)/g when calcined at 300 degrees C. The conductivity, in air, of sintered pellets was measured by electrochemical impedance spectroscopy (EIS) and it was found to be comparable with literature values. The activation energy for the total conductivity was around 0.83 ev. The powder calcined at lower temperature showed better sinterability and higher total conductivity due to an increased bulk conductivity. (C) 2009 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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收藏
页码：2959 / 2963
页数：5
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