A new candidate as the cathode material for intermediate and low temperature SOFCs  

作　　者：LI Song SUN Xueli WEN Zhongsheng SUN Juncai 

机构地区：[1]Institute of Materials and Technology, Dalian Maritme University, Dalian 11606, China Institute of Materials and Technology, Dalian Maritme University, Dalian 11606, China Institute of Materials and Technology, Dalian Maritme University, Dalian 11606, China Institute of Materials and Technology, Dalian Maritme University, Dalian 11606, China

出　　处：《Rare Metals》2006年第z1期213-217,共5页稀有金属（英文版）

摘　　要：In order to develop the new cathode materials suitable for intermediate and low temperature solid oxide fuel cells (IT/LTSOFCs), LaNi1-xFexO3 (x=0.4-0.8) (LNF) materials were synthesized using coprecipitation method. Their structures and morphologies were investigated by XRD and SEM, and their electronic conductivities at different temperatures were measured by dc four terminal method. Fuel cells were fabricated to evaluate the electrochemical properties of the LNF materials as cathodes at different temperatures. The performance of 450-497 mW·cm-2 was obtained in the temperature region of 580-650 ℃ for the LaNi0.2Fe0.8O3 cathode, and of 209-227 mW·cm-2 at 400-500 ℃ for the LaNi0.4Fe0.6O3. The excellent fuel cell performances indicate that the LNF materials are good cathodes for IT/LTSOFCs.In order to develop the new cathode materials suitable for intermediate and low temperature solid oxide fuel cells (IT/LTSOFCs), LaNi1-xFexO3 (x=0.4-0.8) (LNF) materials were synthesized using coprecipitation method. Their structures and morphologies were investigated by XRD and SEM, and their electronic conductivities at different temperatures were measured by dc four terminal method. Fuel cells were fabricated to evaluate the electrochemical properties of the LNF materials as cathodes at different temperatures. The performance of 450-497 mW·cm-2 was obtained in the temperature region of 580-650 ℃ for the LaNi0.2Fe0.8O3 cathode, and of 209-227 mW·cm-2 at 400-500 ℃ for the LaNi0.4Fe0.6O3. The excellent fuel cell performances indicate that the LNF materials are good cathodes for IT/LTSOFCs.

关 键 词：LaNi1-xFexO3 cathode materials coprecipitation method IT/LTSOFC 

分 类 号：TG146.4[一般工业技术—材料科学与工程]