Bi-based oxide anodes for direct hydrocarbon SOFCs at intermediate temperatures

被引：18

作者：

Hirabayashi, D ^{[1
]}

Hashimoto, A

Hibino, T

Harada, U

Sano, M

机构：

[1] Natl Inst Adv Ind Sci & Technol, Nagoya, Aichi 4638560, Japan

[2] Nagoya Univ, Grad Sch Environm Studies, Nagoya, Aichi 4660804, Japan

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2004年 / 7卷 / 05期

关键词：

D O I：

10.1149/1.1667791

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Doped Bi-based oxides were investigated as potential anode materials for direct hydrocarbon solid oxide fuel cells (SOFCs) at intermediate temperatures. (Bi2O3)(0.85)(Ta2O5)(0.15) met this criterion most successfully. A fraction of Bi2O3 in this material was reduced to BiO and Bi metal under fuel conditions, which yielded high conductivities (<1 S cm(-1)) based on oxide ions and electrons above 500 degrees C. Carbon deposition was successfully prevented when butane was used as the fuel below 800 degrees C. The catalytic activities for hydrocarbon oxidation were high enough to promote the complete oxidation of butane during cell operation. These abilities provided an enhanced anode performance with increasing temperature from 600 to 750 degrees C, and the resulting polarization resistance reached 1.4 Omega cm(2) at 750 degrees C. (C) 2004 The Electrochemical Society.

引用

页码：A108 / A110

页数：3

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