Layered perovskite GdBaCoFeO5+x as cathode for intermediate-temperature solid oxide fuel cells

被引：20

作者：

Ding, Hanping ^{[1
]}

Xue, Xingjian ^{[1
]}

机构：

[1] Univ S Carolina, Dept Mech Engn, Columbia, SC 29208 USA

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 09期

关键词：

Solid oxide fuel cells (SOFCs); Layered perovskite; Cathode; Interfacial polarization resistance; ELECTROCHEMICAL PROPERTIES; ELECTRICAL-PROPERTIES; PERFORMANCE; SOFCS;

D O I：

10.1016/j.ijhydene.2010.02.031

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 layered perovskite oxide, GdBaCoFeO5+x (GBCF), was investigated as a novel cathode for intermediate-temperature solid oxide fuel cells (IT-SOFCs). A laboratory-sized Sm0.2Ce0.8O1.9 (SDC)-based tri-layer cell of NiO-SDC/SDC/GBCF was tested under intermediate-temperature conditions of 550-650 degrees C with humidified H-2 (similar to 3% H2O) as a fuel and the static ambient air as oxidant. A maximal power density of 746 mW cm(-2) was achieved at 650 C. The interfacial polarization resistance was as low as 0.42, 0.18 and 0.11 Omega cm(2) at 550, 600 and 650 degrees C, respectively. The experimental results indicate that the layered perovskite GBCF is a promising cathode candidate for IT-SOFCs. Published by Elsevier Ltd on behalf of Professor T. Nejat Veziroglu.

引用

页码：4316 / 4319

页数：4

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