摘要
采用水热法制备LiNi1/3Co1/3Mn1/3O2,研究了在合成过程中添加不同表面活性剂对锂离子电池正极材料LiNi1/3Co1/3Mn1/3O2电化学性能的影响。利用XRD和SEM对其结构和形貌进行表征,并采用循环伏安、交流阻抗、恒流充放电测试其电化学性能。结果表明,均合成了LiNi1/3Co1/3Mn1/3O2,其中用十二烷基苯磺酸钠合成的样品电化学性能较好,在C/2倍率的放电条件下,首次比容量达到143.8mAh/g,经过100次循环后,比容量保持为106.8mAh/g,容量保持率为74.3%。
LiNi1/3Co1/3Mn1/3O2 was synthesized by hydrothermal synthesis.The effects of diffe-rent surfactant on Li-ion battery cathode material LiNi1/3Co1/3Mn1/3O2 electrochemical performance were studied.XRD and SEM were used to characterize the structures and morphologies of the synthesized samples.The electrochemical performance was tested by cyclic volt-ampere （CV）,AC impedance and constant current charge-discharge measurement.The results show that pure phase LiNi1/3Co1/3Mn1/3O2 were synthesized,and samples which synthesized with LAS exhibited better electrochemical performance.Its specific capacity is higher at C/2.The first speci-fic capacity is 143.8 mAh/g and remains 106.8 mAh/g after 100 cycles,keeping capacity of 74.3％.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2014年第6期37-39,43,共4页
Materials Reports
基金
滁州学院校级项目(2010kj006B)
安徽省高校优秀青年基金(2012SQRL157)
安徽省化学工程与工艺教学团队(20101035)
