A novel cathode material BaCe0.4Sm0.2Co0.4O3-δ for proton conducting solid oxide fuel cell

被引：19

作者：

Zhang, Cuijuan ^{[1
]}

Zhao, Hailei ^{[1
,2
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

[2] Beijing Key Lab New Energy Mat & Technol, Beijing 100083, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2011年 / 13卷 / 10期

关键词：

Solid oxide fuel cell; Cathode; Proton conductor; BaCe0.4Sm0.2Co0.4O3-delta; Electrode performance; PERMEATION;

D O I：

10.1016/j.elecom.2011.06.035

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel cathode material BaCe0.4Sm0.2Co0.4O3-delta composed of two phases BaCe1-x(Sm/Co)(x)O3-delta and BaCo1-x(Sm/Ce)(x)O3-delta was prepared in situ via the citric-nitrate route and its performance as cathode material for proton conducting solid oxide fuel cell (SOFC-H) was characterized. BaCe0.4Sm0.2Co0.4O3-delta exhibited simultaneous protonic, electronic, and oxygen ionic conduction in air, leading to a good electrode performance. The polarization resistance of the novel cathode material in symmetrical cell was 0.36 Omega cm(2) with Pt as the current collector at 700 degrees C in wet air. The electrode performance can be further improved through microstructure optimization. It also showed good thermal expansion compatibility with BaCe0.4Sm0.2Co0.4O3-delta electrolyte over a 100 h duration test. BaCe0.4Sm0.2Co0.4O3-delta is a promising cathode material for SOFC-H. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1070 / 1073

页数：4

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