La_(1-x)Ca_xCrO_3对硫-氧燃料电池催化性能的研究  

Study of La_(1-x)Ca_xCrO_3 as anode catalysts for sulfur-oxygen SOFC

作　　者：朱伟长[1] 卢异飞[1] 俞海云[1] 郑翠红[1] 闫勇[1] 孙颜刚[1] 

机构地区：[1]安徽工业大学材料科学与工程学院安徽省金属材料与加工重点实验室,安徽马鞍山243002

出　　处：《电源技术》2011年第1期47-49,共3页Chinese Journal of Power Sources

基　　金：安徽省2007年度科技攻关项目(批准号07010202070)

摘　　要：通过共沉淀法制备出La1-xCaxCrO3(x=0,0.1,0.2,0.3)作为阳极催化剂,分别以钇稳定氧化锆(YSZ)粉体和La0.6Sr0.4Co0.2Fe0.8O3-x(LSCF)粉体作为硫-氧燃料电池的电解质材料和阴极材料。发现在700～800℃时,La1-xCaxCrO3(x=0,0.1,0.2,0.3)对硫-氧燃料电池具有明显的催化效果,当选择La0.8Ca0.2CrO3为阳极催化剂时,测得800℃时单电池开路电压为560mV,达到理论计算值的75%。其余催化效果由大到小依次为:La0.9Ca0.1CrO3、LaCrO3、La0.7Ca0.3CrO3。La1-xCaxCrO3 （x=0,0.1,0.2,0.3） were prepared by co-precipitation method and acted as anode catalysts of sulfur-oxygen SOFC with YSZ as electrolyte material and LSCF as cathode material.The open circuit voltage of cells was tested.The results of the OBV test indicate that in the range of 700-800 ℃,La1-xCaxCrO3 （x=0,0.1,0.2,0.3） has clear catalysis effect on sulfur-oxygen SOFC.When La0.8Ca0.2CrO3 was selected as anode catalyst,at 800 ℃,theOCV is 0.560V,whichreaches 75%ofthetheoretical OCV value.Furthermore,therestofthecatalytic effect is：La0.9Ca0.1CrO3 LaCrO3La0.7Ca0.3CrO3.

关 键 词：铬酸镧 固体氧化物燃料电池 阳极 硫磺 

分 类 号：TM911[电气工程—电力电子与电力传动]