Abstract： To study the effect of sodium dodecyl benzene sulfonate (LAS) on the structure and performance of ternary cathode materials， the ternary cathode materials were prepared with acetates of nickel， cobalt and manganese as raw materials by the method of hydroxyl co-precipitation at the condition of different additive amounts of LAS. The products were characterized by XRD， SEM and charge-discharge tests. The mechanism of LAS was analyzed. The results show that LAS does not affect the layer structure of the cathode materials. The first discharge specific capacity is as high as 181.9 mA·h/g. The discharge specific capacitycan reach 168.2 mA·h/g even after cycling 30 times.

Keywords: Li-ion battery; cathode materials; surfactant; co-precipitation

中图分类号：TM912        文献标志码：A

文章编号：1008-5548(2015)02-0032-03

DOI:10.13732/j.issn.1008-5548.2015.02.008

收稿日期：2014-04-22， 修回日期：2014-06-04，在线出版时间：2015-04-17。

基金项目：国家自然科学基金项目，编号：31278168；北方民族大学校级科研项目，编号：2014XYZ10。

第一作者简介：张正国（1987—），男，硕士，助教，研究方向为新能源材料与技术。 电话：18895003308，E-mail:13639562817@126.com。

通信作者简介：龚波林（1966—），男，博士，教授，研究方向为新能源材料、分离材料。 电话：0951-2062300，E-mail:gongbolin@163.com。