锂离子电池正极材料Li_3V_2(PO_4)_3的合成及性能  

Synthesis and performance of Li-ion battery cathode material Li_3V_2(PO_4)_3

作　　者：陈飞[1] 王志兴[1] 李新海[1] 

机构地区：[1]中南大学冶金科学与工程学院,湖南长沙410083

出　　处：《电池》2009年第5期237-239,共3页Battery Bimonthly

基　　金：国家重点基础研究计划(973计划)项目(2007CB613607)

摘　　要：以导电炭黑为还原剂、LiH2PO4和V2O5为原料,采用碳热还原法合成了锂离子电池正极材料磷酸钒锂Li3V2(PO4)3。研究了烧结温度和时间对产物的影响。XRD、SEM和充放电测试表明:在750℃下烧结12 h合成的样品属于单斜晶系,0.2C充放电的首次放电比容量为122.0 mAh/g,第20次循环的比容量为118.4 mAh/g。Li-ion battery cathode material lithium-vanadium-phosphate Li3 V2 （PO4）3 was synthesized by carbon-thermal reduction method,using conductive carbon black as reductant, LiH2PO4 and V2O5 as raw materials. The effects of sintering temperature and time on the products were studied. The results of XRD, SEM and charge-discharge tests showed that the sample sintered at 750 ℃ for 12 h had a single monoclinic structure, when charge-discharge at 0.2 C,its initial specific discharge capacity was 122.0 mAll/ g, the specific capacity at the 20th cycle was 118.4 mAh/g.

关 键 词：正极材料 磷酸钒锂[Li3V2(PO4)3] 碳热还原法 

分 类 号：TM912[电气工程—电力电子与电力传动]