Li_(3-2x)B_(1-x)N_xO_3(x=0.1,0.2,0.3)锂离子固体电解质的制备和性能  

Preparation and Characterization of Li_(3-2x)B_(1-x)N_xO_3(x=0.1, 0.2, 0.3) Solid Electrolytes

作　　者：李文龙[1,2] 刘欢 杨利青[1] 周倩倩 王红飞[1] 王浩静[1] 张洪[1] Li Wenlong;Liu Huan;Yang Liqing;Zhou Qianqian;Wang Hongfei;Wang Haojing;Zhang Hong(State Key Laboratory of Transient Optics and Photonics,Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences,Xi'an 710119,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室,陕西西安710119 [2]中国科学院大学,北京100049

出　　处：《稀有金属材料与工程》2018年第12期3835-3838,共4页Rare Metal Materials and Engineering

基　　金：陕西省工业科技攻关项目(2016GY-170)

摘　　要：以硝酸锂、碳酸锂、氧化硼为原料,采用固相法制备得到了Li_(3-2x)B_(1-x)N_xO_3(x=0.1, 0.2, 0.3)锂离子固体电解质,通过无压烧结制备得到固体电解质片,并通过X射线衍射(XRD)、扫描电子显微镜(SEM)、电化学交流阻抗(EIS)对Li_(3-2x)B_(1-x)N_xO_3固态电解质进行了表征。结果表明:当x=0.2时,采用无压烧结在600℃烧结10 h制备得到的固体电解质片致密度最高,达到理论密度的90.07%,室温锂离子总电导率也最大,为6.37×10^(-6) S/cm,此时激活能值最小,为0.48 eV。The Li3.2xB1-xNxO3(x=0.1,0.2,0.3) compound with pure phase were prepared by solid phase method with lithium nitrate,lithium carbonate and boron oxide as the raw materials.The Li3.2xB1-xNxO3 precursor powders were sintered via pressureless sintering,and the Li3.2xB1-xNxO3 solid electrolytes were characterized by X-ray diffraction (XRD),scanning electron microscopy (SEM)and electrochemical impedance spectroscopy (EIS).The results show that the Li26B0.8N0.2O3sintered at 600℃ for 10h by the pressureless sintering shows the highest density, reaching 90.07% of theoretical density,the highest total conductivity of 6.37×10^-6S/cm,and the lowest activation energy 0.48eV at 250-390K.

关 键 词：固相法 固体电解质 锂离子电导率 

分 类 号：TM911[电气工程—电力电子与电力传动]