Novel cobalt-free cathode materials BaCexFe1-xO3-δ for proton-conducting solid oxide fuel cells

被引：103

作者：

Tao, Zetian ^{[1
]}

Bi, Lei ^{[1
]}

Zhu, Zhiwen ^{[1
]}

Liu, Wei ^{[1
]}

机构：

[1] Univ Sci & Technol China, Lab Adv Funct Mat & Devices, Dept Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2009年 / 194卷 / 02期

关键词：

Solid oxide fuel cells; Doped barium cerate; Perovskite structure; Functional layer; Proton conducting; ELECTROCHEMICAL PERFORMANCE; COMPOSITE CATHODES; ELECTROLYTE;

D O I：

10.1016/j.jpowsour.2009.06.071

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：

A series of cobalt-free and low cost BaCexFe1-xO3-delta (x = 0.15, 0.50, 0.85) materials are successful synthesized and used as the cathode materials for proton-conducting solid oxide fuel cells (SOFCs). The single cell, consisting of a BaZr(0.1)Ce(0.7)y(0.2)O(3-delta) (BZCY7)-NiO anode substrate, a BZCY7 anode functional layer, a BZCY7 electrolyte membrane and a BaCexFe1-xO3-delta cathode layer, is assembled and tested from 600 to 700 degrees C with humidified hydrogen (similar to 3% H2O) as the fuel and the static air as the oxidant. Within all the cathode materials above, the cathode BaCe0.5Fe0.5O3-delta shows the highest cell performance which could obtain an open-circuit potential of 0.99 V and a maximum power density of 395 mW cm(-2) at 700 degrees C. The results indicate that the Fe-doped barium cerates can be promising cathodes for proton-conducting SOFCs. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：801 / 804

页数：4

共 22 条

[1] Thermodynamic analysis of a methane fed SOFC system based on a protonic conductor [J].