低温SOFC用阴极材料LaNi_(0.6)Fe_(0.4)O_3  

Cathode material LaNi_(0.6)Fe_(0.4)O_3 for low temperature solid oxide fuel cell

作　　者：李嵩[1] 孙雪丽[1] 季世军[1] 孙俊才[1] 

机构地区：[1]大连海事大学材料工艺研究所,辽宁大连116026

出　　处：《电池》2007年第1期44-45,共2页Battery Bimonthly

基　　金：瑞典-亚洲国际合作计划项目(DNR6964)资助

摘　　要：用固体氧化物燃料电池技术,考察了钙钛矿型氧化物LaNi0.6Fe0.4O3（LNF-64）作为阴极材料在低温（400℃、500℃）下的电化学性能,以复合材料[Ce0.8Sm0.2O2-δ（SDC）和碳酸盐（Na2CO3和Li2CO3）]为电解质,分别以NiO和LNF-64为阳极和阴极。结果表明,通过碳酸盐共沉淀法得到的LNF-64前驱体粉末,在900℃下煅烧4 h,形成了单一的菱形结构,粉末粒径约为300～500 nm。单体电池在500℃下的最大功率密度和短路电流密度分别为213 mW/cm^2和720 mA/cm^2。The electrochemical performance of LaNi0.6Fe0.4O3 （LNF-64） perovskite oxide as cathode material at low temperature （400 ℃ and 500 ℃） was studied by a solid oxide fuel cell technology. The composite material [Ce0.8Sm0.2O2-δ（SDC） and carbonate （Na2CO3, Li2CO3）] was used as the electrolyte, NiO and LNF-64 as anode and cathode, respectively. The results showed that the LNF-64 precursor powder which prepared through carbonate co-precipitation method formed the pure rhombohedral structure after calcined at 900℃ for 4 h, its particle size was about 300 ～ 500 nm. The maximum power density and short circuit current density of the single cell at 500 ℃ were 213 mW/cm^2 , 720 mA/cm^2 , respectively.

关 键 词：阴极材料 LaNi0.6Fe0.4O3(LNF-64) 共沉淀法 固体氧化物燃料电池(SOFC) 

分 类 号：TM911.4[电气工程—电力电子与电力传动]