Electrochemical characteristics of Ba0.5Sr0.5Co0.8Fe0.2O3-δ-Sm0.2Ce0.8O1.9 composite materials for low-temperature solid oxide fuel cell cathodes

被引：39
作者：
Wei, Bo [1 ]
Lu, Zhe
Li, Shuyan
Ai, Gang
Liu, Zhiguo
Su, Wenhui
机构：
[1] Harbin Inst Technol, Dept Phys, Ctr Condensed Matter Sci & Technol, Harbin 150001, Peoples R China
[2] Jilin Univ, Dept Phys, Changchun 130023, Peoples R China
[3] Acad Sinica, Int Ctr Mat Phys, Shenyang 110015, Peoples R China
来源：
MATERIALS LETTERS | 2006年 / 60卷 / 29-30期
关键词：
solid oxide fuel cells; composite materials; perovskite; electrochemical performances;
D O I：
10.1016/j.matlet.2006.03.075
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, Ba0.5Sr0.5Co0.8Fe0.2O3-delta-xSm(0.2)Ce(0.8)O(1.9) (BSCF-xSDC, x=0-60 wt.%) composite cathodes were prepared by soft chemical methods, and then examined for potential applications in lower temperature solid oxide fuel cells. Both DC polarization and AC impedance spectroscopy measurements indicated that the addition of SDC electrolyte into BSCF remarkably improved the electrochemical properties. The optimum composition was found to be BSCF-30SDC, which exhibited 5.5 times higher polarization current density and 15.1% polarization resistance, compared with the pure-phase BSCF cathode at 550 degrees C. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：3642 / 3646
页数：5
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