Mechanism of Cr deposition and its application in the development of Cr-tolerant cathodes of solid oxide fuel cells

被引：136

作者：

Jiang, San Ping ^{[1
]}

Zhen, Yongda ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

来源：

SOLID STATE IONICS | 2008年 / 179卷 / 27-32期

关键词：

solid oxide fuel cell; review; metallic interconnect; Cr deposition mechanism; Cr-tolerance cathode;

D O I：

10.1016/j.ssi.2008.01.006

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：

It is well known that at solid oxide fuel cells (SOFCs) operating temperatures, volatile Cr species are generated over the chromia scale of chromia-forming alloy interconnect, poisoning the cathodes such as (LaSr)MnO3 (LSM) and (La,Sr)(Co,Fe)O-3 (LSCF) and causing the rapid degradation of the cell performance. Thus, SOFCs based on the chromia-forming alloy interconnect require the development of cathode not only with high electrochemical activity but also with the high Cr-tolerance. In the last 7-8 years, we studied, in detail, the interaction between the Cr-Fe alloys and SOFC cathodes. In this paper, the mechanism of Cr deposition at LSM and LSCF cathodes is briefly reviewed. Based on the reaction mechanism, a strategy to develop Cr-tolerant cathodes for SOFCs is proposed. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1459 / 1464

页数：6

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