Mechanism of Cr deposition and its application in the development of Cr-tolerant cathodes of solid ozide fuel cells
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 (La,Sr)MnO3 (LSM) and (La,Sr)(Co,Fe)O3 (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.
Solid ozide fuel cell Review Metallic interconnect Cr deposition mechanism Cr-tolerance cathode
San Ping Jiang Yongda Zhen
School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
国际会议
The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)
上海
英文
1459-1464
2007-07-01（万方平台首次上网日期，不代表论文的发表时间）