ORGANIC ELECTROLYTE FOR LITHIUM-ION BATTERY AND LITHIUM-ION BATTERY COMPRISING THE SAME

摘要

PURPOSE: An organic electrolyte for a lithium-ion battery is provided to reduce initial irreversible capacity of a battery and to internal resistance of a battery after charge and discharge cycle, thereby improving charge and discharge cycle performance of a battery. CONSTITUTION: An organic electrolyte for a lithium-ion battery includes a lithium salt, an organic solvent, tris(2-chloroethyl) phosphate. The content of tris(2- chloroethyl) phosphate is 0.1 ~ 30 weight%. The lithium salt is used with one or two or more kinds selected from the group consisting of LiPF6, LiBF4, LiAsF6, LiClO4, LiCF3SO3, LiCF3SO3, LiC(SO2CF3)3, LiN(CF3SO2)2 and LiCH(CF3SO2)2. The organic solvent is one or two or more kinds of mixture selected from the group consisting of carbonate, ester, ether, and ketone.