Author: LI Yong-kun,ZHANG Ruo-xin,LIU Jian-sheng(Guangzhou Tinci Materials Technology Co.,Ltd.,Guangzhou,Guangdong 510760,China)
Abstract: The effects of hexamethyldisilazane(HMDS)to the stability of electrolyte and cycle performance of Li-ion battery were studied.The addition of 0.1% HMDS did not effect the initial discharge capacity of the battery,could restrain the hydrolysis of LiPF6 in electrolyte,the capacity retention of the battery after 100 cycles with 1 C in 3.0～4.2 V was 92.4% at ambient temperature. 
Key words: Li-ion battery； electrolyte； LiMn2O4； hexamethyldisilazane(HMDS)；