Electrochemical performances of NdBa0.5Sr0.5Co2O5+x as potential cathode material for intermediate-temperature solid oxide fuel cells

被引：26
作者：
Lue, Shiquan [1 ,2 ]
Meng, Xiangwei [1 ,2 ,3 ]
Ji, Yuan [1 ,2 ]
Fu, Chengwei [1 ,2 ]
Sun, Cuicui [1 ,2 ]
Zhao, Hongyuan [1 ,2 ]
机构：
[1] Jilin Univ, Natl Lab Superhard Mat, Changchun 130012, Peoples R China
[2] Jilin Univ, Coll Phys, Changchun 130012, Peoples R China
[3] Jilin Normal Univ, Inst Condensed State Phys, Siping 136000, Peoples R China
来源：
JOURNAL OF POWER SOURCES | 2010年 / 195卷 / 24期
关键词：
Solid oxide fuel cell; Cathode; Layered perovskite; Electrochemical performance; COMPOSITE CATHODES;
D O I：
10.1016/j.jpowsour.2010.06.061
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：
Layered perovskite oxide NdBa0.5Sr0.5Co2O5+x is investigated as a cathode material for intermediate-temperature solid oxide fuel cells. The NBSC cathode is chemically compatible with the electrolyte La0.9Sr0.1Ga0.8Mg0.2O3-delta (LSGM) at temperatures below 1000 degrees C. It is metallic in nature and the maximum and minimum conductivities are 1368 S cm(-1) at 100 degrees C and 389 S cm(-1) at 850 degrees C. The area specific resistance (ASR) value for the NBSC cathode is as low as 0.023 Omega cm(2) at 850 degrees C. The electrolyte-supported fuel cell generates good performance with the maximum power density of 904, 774 and 556 mW cm(-2) at 850.800 and 750 degrees C, respectively. Preliminary results indicate that NBSC is promising as a cathode for IT-SOFCs. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：8094 / 8096
页数：3
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