FTIR study of the oxygen reduction reactions on Sm0.5Sr0.5CoO3

被引：1
|
作者：
Wu, Qi-Hui [1 ]
Abernathy, Harry
Cheng, Zhe
Liu, Meilin
机构：
[1] Xiamen Univ, Dept Phys, Semicond Photon Res Ctr, Xiamen 361005, Peoples R China
[2] Georgia Inst Technol, Sch Mat Sci & Engn, Ctr Innovat Fuel Cell & Battery Technol, Atlanta, GA 30332 USA
来源：
SURFACE REVIEW AND LETTERS | 2007年 / 14卷 / 04期
关键词：
oxygen reduction reactions; FTIR; SOFC; cathodes;
D O I：
10.1142/S0218625X07009712
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The oxygen reduction on solid oxide fuel cell cathode electrode, Sm0.5Sr0.5CoO3, was studied by using emission Fourier transform infrared spectroscopy (FTIR). Superoxide (O-2) species was detected with appearance of an IR peak at wavenumber about 1124 cm(-1). Moreover, we interpreted for the first time that there would be a close relationship between the baseline shift of IR spectra and the oxygen vacancy concentration (OVC) of the samples. The downward baseline shift of IR spectra is due to the decrease of OVC in the bulk, while, the increase of the OVC in the bulk would cause the upward baseline shift.
引用
收藏
页码：587 / 591
页数：5
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