High performance Ni-Sm2O3 cermet anodes for intermediate-temperature solid oxide fuel cells

被引：27

作者：

Ding, Dong ^{[1
]}

Li, Lei ^{[1
]}

Feng, Kai ^{[1
]}

Liu, Zhangbo ^{[1
]}

Xia, Changrong ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Mat Sci & Engn, Lab Renewable Clean Energy, Hefei 230026, Anhui, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2009年 / 187卷 / 02期

关键词：

Ni-Sm2O3; anode; Doped ceria; Electrocatalytic activity; Samaria; Solid oxide fuel cells; ELECTROLYTES; ELECTRODES; CATHODE;

D O I：

10.1016/j.jpowsour.2008.11.013

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 novel anode consisting of Ni and Sm2O3 with negligible oxygen-ion conductivity was developed for intermediate-temperature solid oxide fuel cells (SOFCs). Its triple phase boundary length is pretty small compared with the conventional Ni-samaria doped ceria (SDC) anode, of which SDC is one of the electrolytes having high oxygen-ion conductivity. Even so, single cells with Ni-Sm2O3 anodes generated peak power density of 542 mW cm(-2) at 600 degrees C, comparable to, if not higher than those with the Ni-SDC anodes when the same cathodes and electrolytes were applied. In addition, Ni-Sm2O3 exhibited lower interfacial polarization resistance than Ni-SDC. The high electrochemical performance, which might be related to the high catalytic activity of Sm2O3 and the unique microstructures of the Ni-Sm2O3, suggests a viable alternative to the conventional anodes for SOFCs. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：400 / 402

页数：3

共 18 条

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