Li_(1.3)(Al_(1-x)B_x)_(0.3)Ti_(1.7)(PO_4)_3锂离子电池的合成研究  

Study on Preparation of Li_(1.3)(Al_(1-x)B_x)_(0.3)Ti_(1.7)(PO_4)_3 Lithium Ion Battery

作　　者：邓仕英[1] 陈红萍[2] 耿家源[1] DENG Shiying CHEN Hongping GENG Jiayuan(College of Technology and Engineering, Yangtze University, Jingzhou 434020, China Wuhan University of Technology, Wuhan 430070, China)

机构地区：[1]长江大学工程技术学院,湖北荆州434020 [2]武汉理工大学,湖北武汉430070

出　　处：《铸造技术》2017年第4期777-779,787,共4页Foundry Technology

基　　金：国家高新技术863计划资助项目(2003AA302330);长江大学工程技术学院科研基金资助项目(13j0601)

摘　　要：以H_3BO_3和Al_2O_3为掺杂源,采用固相烧结法,合成了锂离子电池材料Li_(1.3)(Al_(1-x)B_x)_(0.3)Ti_(1.7)(PO_4)_3(x=0,0.2,0.4,0.6,0.8)。通过XRD、SEM和电化学性能测试,结果表明:Li_(1.3)(Al_(1-x)B_x)_(0.3)Ti_(1.7)(PO_4)_3主晶相为LiTi_2(PO_4)_3,且有Al^(3+)和B^(3+)取代了部分Ti^(4+);当掺杂量x=0.4时,材料的致密度好,且室温离子电导率最高,可达2.54×10^(-5)S/cm。Cathode materials Li1.3（Al1-xBx）0.3Ti1.7（PO4）3（x=0, 0.2, 0.4, 0.6, 0.8） for Li-ion battery were synthesized by solid state sintering technology with H3BO3 and Al2O3 as doping source. The samples were characterized by XRD, SEM and electrochemical performance test. The results indicate that the sample consists of dominating LiTi2（PO4）3 phases, and there is a certain of Al^3＋ and B^3＋ replaced Ti^4＋. When x=0.4, the density of the specimen is excellent, and the total conductivity comes up to max （2.54×10^-5S/cm） at room temperature.

关 键 词：锂离子电池 硼掺杂 LI Ti2(PO4)3 电导率 

分 类 号：TM912[电气工程—电力电子与电力传动]