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.
出处
《无机盐工业》
CAS
北大核心
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)
关键词
正极材料
球磨
磷酸铁锂
cathode material
bailing-milling
lithium iron phosphate
