Chemical stability of BaCe0.8Y0.2O2.9-Ce0.8Gd0.2O1.9 composite electrolytes

被引：0
|
作者：
Yu S. [1 ]
Xiong Y. [1 ]
Mou X. [1 ]
Peng K. [1 ]
Li J. [2 ]
机构：
[1] College of Material Science and Engineering, Fuzhou University, Fuzhou
[2] Tianjin Research Institute for Testing Technology, Tianjin
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2016年 / 44卷 / 04期
关键词：
Barium cerate; Chemical stability; Composite electrolyte; Electrochemical property; Gadolinium doped ceria; Intermediate-temperature solid oxide fuel cells;
D O I：
10.14062/j.issn.0454-5648.2016.04.01
中图分类号：
学科分类号：
摘要：
The BaCe0.8Y0.2O2.9-Ce0.8Gd0.2O1.9 (BCY-GDC) composite electrolytes with different molar ratios were prepared a mechanically-mixing method using BCY and GDC powders prepared via a sol-gel combustion method, and were sintered in air at 1450℃ for 5 h. The chemical stability and electrochemical properties of BCY-GDC composite electrolytes were investigated. The results show that the chemical stability of BCY-GDC composite electrolyte against CO2 and boiling water is better than that of the single phase BCY. The BCY-GDC composite electrolytes have a good chemical stability against CO2 and boiling water as the molar ratio of BCY is less than 70%. The single cell made from the BCY-GDC composite electrolyte with a BCY-GDC molar ratio 1:1 possesses better stability of the maximum power density than the cells with the BCY electrolyte at 700℃ for 20 h. © 2016, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
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页码：487 / 492
页数：5
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