An A-Site-Deficient Perovskite offers High Activity and Stability for Low-Temperature Solid-Oxide Fuel Cells

被引：88
|
作者：
Zhu, Yinlong [1 ]
Chen, Zhi-Gang [2 ,3 ]
Zhou, Wei [2 ,3 ,4 ]
Jiang, Shanshan [1 ]
Zou, Jin [3 ]
Shao, Zongping [1 ]
机构：
[1] Nanjing Univ Technol, Coll Chem & Chem Engn, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, Peoples R China
[2] Univ Queensland, Sch Mat Engn, Brisbane, Qld 4072, Australia
[3] Univ Queensland, Ctr Microscopy & Microanal, Brisbane, Qld 4072, Australia
[4] Univ Queensland, Sch Chem Engn, Brisbane, Qld 4072, Australia
来源：
CHEMSUSCHEM | 2013年 / 6卷 / 12期
基金：
澳大利亚研究理事会;
关键词：
cathodes; fuel cells; oxygen reduction reaction; perovskites; solid-state reactions; RESISTANT CE0.8SM0.2O1.9 ELECTROLYTE; CATHODE MATERIAL; ELECTROCHEMICAL PERFORMANCE; THIN BACE1-XSMXO3-ALPHA; OXYGEN REDUCTION; DESIGN; LAYER; SOFCS;
D O I：
10.1002/cssc.201300694
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Solid oxide fuel cells (SOFCs) directly convert fossil and/or renewable fuels into electricity and/or high-quality heat in an environmentally friendly way. However, high operating temperatures result in high cost and material issues, which have limited the commercialization of SOFCs. To lower their operating temperatures, highly active and stable cathodes are required to maintain a reasonable power output. Here, we report a layer-structured A-site deficient perovskite Sr0.95Nb0.1Co0.9O3- (SNC0.95) prepared by solid-state reactions that shows not only high activity towards the oxygen reduction reaction (ORR) at operating temperatures below 600 degrees C, but also offers excellent structural stability and compatibility, and improved CO2 resistivity. An anode-supported fuel cell with SNC0.95 cathode delivers a peak power density as high as 1016mWcm(-2) with an electrode-area-specific resistance of 0.052cm(2) at 500 degrees C.
引用
收藏
页码：2249 / 2254
页数：6
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