Oxygen Reduction Properties of La0.1Sr0.9Co0.8Fe0.2O3-δ Cathode for SOFC Using Electrochemical Method

被引：1
|
作者：
Im, H. N. [1 ]
Choi, M. B. [2 ]
Jeon, S. Y. [1 ]
Singh, Bhupendra [1 ]
Song, S. J. [1 ]
机构：
[1] Chonnam Natl Univ, Sch Mat Sci & Engn, 300 Yongbong Dong, Kwangju 500757, South Korea
[2] Korea Inst Sci & Technol, Seoul, South Korea
来源：
IONIC AND MIXED CONDUCTING CERAMICS 9 | 2014年 / 61卷 / 01期
关键词：
OXIDE FUEL-CELLS; ELECTRODES;
D O I：
10.1149/06101.0347ecst
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The oxygen reduction reaction (ORR) at the La0.1Sr0.9Co0.8Fe0.2O3-delta (LSCF1982)/Ce0.9Gd0.1O2 (GDC) interface is investigated by electrochemical impedance spectroscopy (EIS) in 550-650 degrees C range under various oxygen partial pressure (pO(2)). The analysis of impedance diagrams revealed the presence of at least three processes in ORR. The reaction at high-frequency region was assigned to the transport of oxide ions within the electrode structure and the electrode/electrolyte interface, whereas the reaction at the low frequency region is the adsorption of gaseous oxygen molecule from the gas phase onto the active electrode site.
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页码：347 / +
页数：2
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