LiCuVO_4负极材料合成及其电化学性能研究  

Synthesis and electrochemical performance of LiCuVO_4 as anode material

作　　者：张新河[1] 汤春微 马小林[3] 杜陈强[1] 唐致远[1] 

机构地区：[1]天津大学化工学院应用化学专业电化学系,天津300072 [2]东莞迈科新能源有限公司,广东东莞523800 [3]天津工业大学理学院,天津300387

出　　处：《电源技术》2016年第9期1751-1752,1809,共3页Chinese Journal of Power Sources

基　　金：广东省高性能锂离子电池研发与产业化创新团队项目(2013N079)

摘　　要：以碳酸锂、五氧化二钒和硝酸铜为原料,通过球磨混合结合高温固相法成功制备锂离子电池新型负极材料LiCuVO_4。热重分析法（TG）、X射线衍射光谱法（XRD）、扫描电子显微镜法（SEM）和电化学测试方法对合成材料进行了研究。结果表明所制备LiCuVO_4负极材料主要由微米尺寸的块状颗粒组成。在0.01~3.0 V充放电区间内,在50 m A/g进行充放电,所制备的材料首次充电比容量达到425.2 m Ah/g,循环50次后充电比容量仍保持在370.8 m Ah/g。在1 A/g电流密度下,循环50次后,充电比容量仍高达288.6 m Ah/g。The LiCuVO4 anode material was synthesized by typical solid state method. The structure, morphology and electrochemical performances of LiCuVO4were characterized by thermogravimetry （TG）, X-ray diffraction （XRD）, scanning electron microscopy （SEM） and electrochemical tests. The results show that the material is composed of micro-sized bulk particles. This material can deliver a high initial charge specific capacity of 425.2 mAh/g at the current of 50 mNg and at 0.01-3.0 V. After 50 cycles, the charge specific capacity can retain 370.8 mAh/g. At the high current of 1 A/g, the LiCuVO4delivers a high charge specific capacity of 288.6 mAh/g after 50 cycles.

关 键 词：锂离子电池 固相法 负极材料 LiCuVO_4 

分 类 号：TM912.9[电气工程—电力电子与电力传动]