Cobalt-free cathode material SrFe0.9Nb0.1O3-δ for intermediate-temperature solid oxide fuel cells

被引：76
作者：
Zhou, Qingjun [1 ,2 ]
Zhang, Leilei [1 ]
He, Tianmin [1 ]
机构：
[1] Jilin Univ, State Key Lab Superhard Mat & Coll Phys, Changchun 130012, Peoples R China
[2] Civil Aviat Univ China, Coll Sci, Tianjin 300300, Peoples R China
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2010年 / 12卷 / 02期
关键词：
Solid oxide fuel cell; Cobalt-free cathode; Electrical conductivity; SrFe0.9Nb0.1O3-delta; Electrochemical performance; COMPOSITE CATHODES; ELECTROCHEMICAL PROPERTIES; ELECTRICAL-CONDUCTIVITY; THERMAL-EXPANSION; IT-SOFCS; BA0.5SR0.5CO0.8FE0.2O3-DELTA; PERFORMANCE; OXYGEN; DELTA; PR;
D O I：
10.1016/j.elecom.2009.12.016
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A cobalt-free cubic perovskite oxide, SrFe0.9Nb0.1O3-delta (SFN) was investigated as a cathode for intermediate-temperature solid oxide fuel cells (IT-SOFCs). XRD results showed that SFN cathode was chemically compatible with the electrolyte Sm0.2Ce0.9O1.9 (SDC) for temperatures up to 1050 degrees C. The electrical conductivity of SFN sample reached 34-70 S cm(-1) in the commonly operated temperatures of IT-SOFCs (600-800 degrees C). The area specific resistance was 0.138 Omega cm(2) for SFN cathode on SDC electrolyte at 750 degrees C. A maximum power density of 407 mW cm(-2) was obtained at 800 degrees C for single-cell with 300 mu m thick SDC electrolyte and SFN cathode. (C) 2009 Elsevier B.V. All rights reserved.
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收藏
页码：285 / 287
页数：3
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