Electrochemical behaviour of Ce0.9Gd0.1O2-δSOFC-anodes

被引：0
|
作者：
Störmer, AO
Holtappels, P
Tu, HY
Stimming, U
机构：
[1] BMW Grp, Technologieprojekte Zukunftsantriebe, D-80788 Munich, Germany
[2] Swiss Fed Labs Mat Testing & Res, Sect High Performance Ceram, CH-8600 Dubendorf, Switzerland
来源：
MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK | 2002年 / 33卷 / 06期
关键词：
D O I：
10.1002/1521-4052(200206)33:6<339::AID-MAWE339>3.0.CO;2-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In order to compare the electrochemical performance of Ce0.9Gd0.1O2-delta (CGO) in various fuels, impedance spectroscopy measurements were carried out in the atmospheres containing H-2, CO, CO2, CH4, N-2 at various compositions, in the temperature range 650degreesC to 850degreesC. Ohmic loss and polarization resistance were derived from impedance spectroscopy measurements. The stability at different temperatures of the anode was also investigated in 9%H-2/91%N-2 humidified with 3% H2O. The microstructure of the anode before and after degradation test was analysed by SEM. These investigations indicated similarities in the impedance and the activation enthalpies in hydrogen/water, methane/water and CO/CO2 atmospheres. No indications of methane cracking leading to carbon formation were found.
引用
收藏
页码：339 / 342
页数：4
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