球磨对磷酸铁锂正极材料性能的影响  

Effects of ball-milling on the preparation of LiFePO4 cathode material

作　　者：冯晓叁[1] 莫祥银[1] 俞琛捷[1] 金传伟[2] 

机构地区：[1]南京师范大学分析测试中心,江苏南京210046 [2]南京工业大学材料科学与工程学院

出　　处：《无机盐工业》2012年第8期57-59,共3页Inorganic Chemicals Industry

基　　金：国家"973"项目(6134501ZT01-004-02);江苏省自然科学基金项目(2007191SB90098);德意志学术交流基金项目(DAAD Section 423-China;Mongolia)

摘　　要：采用高温固相合成法制备锂离子正极材料磷酸铁锂,在合成过程中分别采用湿法球磨和干法球磨,讨论了球磨时间对合成磷酸铁锂电化学性能的影响。用扫描电镜对合成材料进行表征,并对磷酸铁锂正极材料进行电化学性能测试。结果表明,相对于干法球磨,湿法球磨制备的磷酸铁锂样品具有更好的电化学性能。湿法球磨10 h所得的材料电化学性能最好,0.1 C下首次放电比容量为114 mA.h/g。LiFeP04 cathode material for lithium-ion batteries was synthesized by high temperature solid-state reaction with either wet ball-milling or dry ball-milling procedure.Effect of different ball-milling time on performance of the samples was discussed.Morphology of the cathode material and electrochemical performance were characterized by SEM and the electro- chemical performance testing.Results indicated that the samples obtained from wet bailing-milling for 10 h displayed the best discharge capacity.Its first specific discharge capacity was 114 mA-h/g at 0.1 C.

关 键 词：正极材料 球磨 磷酸铁锂 

分 类 号：TQ126.35[化学工程—无机化工]