熔融碳酸盐燃料电池新型阴极材料的耐蚀性能  

Stability analysis of cathode materials in molten carbonate fuel cells

作　　者：陈大英[1] 李福燊[1] 王新东[1] 李丽芬[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《北京科技大学学报》2005年第1期79-81,共3页Journal of University of Science and Technology Beijing

基　　金：国家自然科学基金资助项目(No.50272009 50074003)

摘　　要：通过对几种新型的钙钛矿结构材料在熔融碳酸盐燃料电池(MCFC)熔盐电解质(Li0.62K0.38)CO3中的耐蚀性能的研究,探讨了这些材料用作MCFC阴极的可行性.研究表明:SrFe0.5Co0.5O3虽然有着优良的混合导电特性,但在高温熔盐中腐蚀严重;La0.8Sr0.2MnO3La0.8Sr0.2Ce0.1Mn0.9O3和La0.8Sr0.2Ni0.1Mn0.9O3在高温熔盐中严重锂化,且Sr大量溶解;而经Li2O掺杂的LaMnO3(Li与La的摩尔比为1:1),在高温熔盐中的稳定性良好.The feasibility of several perovskite-type oxide materials used as the cathode for Molten Carbonate Fuel Cells (MCFC) was discussed by studying the stability of the materials in MCFC molten carbonate. Experimental results showed that SrFe0.5Co0.5O3 has conspicuous mixed electric characteristic but the major limit is dissolution in the electrolyte of molten carbonate. La0.8Sr0.2MnO3, La0.8Sr0.2Ce0.1 Mn0.9O3 and La0.8Sr0.2Ni0.1 Mn0.9O3 were filtered by a lot of Li+ and dissolved a large amount of Sr2+ in molten carbonate, and thus these several materials could not be used as the cathode for MCFC. It was proved by experiment that the stability behavior of LaMnO3 which had been lithium-loaded beforehand was outstanding in MCFC molten carbonate.

关 键 词：碳酸盐 燃料电池 阴极材料 稳定性 

分 类 号：TM911.47[电气工程—电力电子与电力传动]