Defect structure and electrical properties of LaSr_3Fe_3O_(10-δ)  

作　　者：张国光 李琴 曹径倩 崔明杰 

机构地区：[1]Jiangxi Materials Science and Technology Center,Nanchang Hangkong University

出　　处：《Journal of Rare Earths》2010年第2期270-273,共4页稀土学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (50672100);the Provincial Education Department of Jiangxi Province ([2006]313)

摘　　要：As a mixed conductor,LaSr3Fe3O10-δ with triple layer perovskite intergrowth structure can be used as an oxygen separation membrane material and cathode material in solid oxide fuell cells.LaSr3Fe3O10-δ was synthesized via citrate acid route.Iodine titration method was used to determine the average valence of transition metal Fe and oxygen nonstoichiometry δ.Conductivities of LaSr3Fe3O10-δ were measured in the oxygen partial pressure range from 10-2×105 to 1×105 Pa,by Ac four probe method.Seebeck coefficient...As a mixed conductor,LaSr3Fe3O10-δ with triple layer perovskite intergrowth structure can be used as an oxygen separation membrane material and cathode material in solid oxide fuell cells.LaSr3Fe3O10-δ was synthesized via citrate acid route.Iodine titration method was used to determine the average valence of transition metal Fe and oxygen nonstoichiometry δ.Conductivities of LaSr3Fe3O10-δ were measured in the oxygen partial pressure range from 10-2×105 to 1×105 Pa,by Ac four probe method.Seebeck coefficient...

关 键 词：mixed conductor defect structure oxygen chemical diffusion rare earths 

分 类 号：O614.331[理学—无机化学]