Effect of heptamethyldisilazane as an additive on the stability performance of LiMn2O4 cathode for lithium-ion battery

被引:47
作者
Li, Yongkun [1 ]
Zhang, Ruoxin [1 ]
Liu, Jiansheng [1 ]
Yang, Chunwei [1 ]
机构
[1] Guangzhou Tinci Mat Technol Co Ltd, Battery Mat Dept, Guangzhou 510760, Guangdong, Peoples R China
关键词
Lithium-ion battery; Electrolyte; Heptamethyldisilazane; Spinet LiMn2O4; LIPF6-BASED ELECTROLYTES; CAPACITY LOSSES; SALT;
D O I
10.1016/j.jpowsour.2008.08.075
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The effect of heptamethyldisilazane as additive on the stability of the electrolyte and cycling performance of LiMn2O4 batteries was studied by linear sweep voltammetry, charge-discharge of battery, stability measurement and high temperature test. The results show that the addition of heptamethyldisilazane to the electrolyte can suppress the contents of HF in the electrolyte and the cycling performance of LiMn2O4 batteries can be improved. After storage at 60 degrees C for 7 days, the stability of batteries using electrolyte with heptamethyldisilazane can be improved, however the stability of batteries using the electrolyte with heptamethyldisilazane can be weakened after storage at 85 degrees C for 4 h. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:685 / 688
页数:4
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