掺杂改性对Li1.3Al0.3Ti1.7（PO4）3性能的影响  

Effect of doping modification on the performance of Li1.3Al0.3Ti1.7（PO4）3

作　　者：杨程响 石斌 贺焰 王庆杰 YANG Cheng-xiang;SHI Bin;HE Yan;WANG Qing-jie(State Key Laboratory of Advanced Chemical Power Sources,Guizhou Meiling Co.,Ld.,Zunyi,Guizhou 563003,China)

机构地区：[1]贵州梅岭电源有限公司特种化学电源国家重点实验室

出　　处：《电池》2019年第5期414-416,共3页Battery Bimonthly

摘　　要：采用共沉淀法制备Li1.3Al0.3Ti1.7(PO4)3(LATP)粉体材料,分析不掺杂、掺杂碳酸锂和正硅酸乙酯的LATP材料的烧结性能、晶体结构和离子导电性能。掺杂有助于提高LATP的总离子电导率,降低晶界阻抗,且掺杂碳酸锂效果好于掺杂正硅酸乙酯。在掺杂10%碳酸锂的条件下,晶粒离子电导率为1.97mS/cm,室温总离子电导率达到相对最佳值0.637mS/cm。Li1.3Al0.3Ti1.7(PO4)3(LATP)powder materials were prepared by coprecipitation method.The sintering properties,crystal structure and ionic conductivity of undoped,doped lithium salts and ethyl orthosilicate LATP materials were studied.Doping could improve the total ionic conductivity and decrease the grain boundary impedance of LATP,the effect of doping lithium salt was better than that of doping ethyl orthosilicate.When 10% lithium carbonate was doped,the ionic conductivity of the grain was 1.97 mS/cm,the total ionic conductivity at room temperature was up to 0.637 mS/cm.

关 键 词：固体电解质 快离子导体 共沉淀 离子电导率 

分 类 号：TM912.9[电气工程—电力电子与电力传动]