Research on Preparation and Electrical Properties of Cathode Materials of La0.8Sr0.2Co0.085CuxFe0.915-xO3-δ for ITSOFC

作     者：JIE YU~a,WEN-HUI MA~(b*),HUA WANG~b,CHENG-HONG ZOU~a,YA-LEI Du~a [a.Department of Renewable Resources Science and Technology,School of Environment, Science and Engineering,Kunming University of Science and Technology,Kunming,650093 b.Department of Metallurgical Engineering,School of Materials and Metallurgical Engineering,Kunming University of Science and Technology,Kunming,650093] 

会议名称：《第六届国际稀土开发与应用研讨会》

会议日期：2010年

学科分类：081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 

基　　金：The National Natural Science Foundation of China(50204007) The Natural Science Foundation of Yunnan Province(2009ZC027M) 

关 键 词：ITSOFC Cathode Materials La0.8Sr0.2Co0.085CuxFe(0.915-xO3-δ Perovskite Conductivity 

摘      要：The powders of cathode materials LaSrCoCuFeO(x=0.1,0.3,0.5, 0.7) for ITSOFC were synthesized by the Glycine-Nitrate Process(GNP).XRD were used to characterize the *** results show that only the LSCCF(x=0.3) exhibits pure perovskite *** other materials exist a small amount of impurity *** conductivity was measured by a four-probe DC *** is found that LSCCF(x=0.1,0.5,0.7) correspond to the small polaron principle at Air atmosphere,the electrical conductivity increasing with the *** electrical conductivity of LSCCF(x=0.3) obeys the small polaron principle at low temperature,while the oxygen vacancy conduction principle at high *** electrical conductivity increases first and decreases later with the temperature increasing,and reaches the maximum of 1809.47S·cm at *** the other hand,the electrical conductivity of LSCCF(x=0.3) has little effect by the temperature in Argon atmosphere and far less than in Air atmosphere.