ELECTROLYTES FOR LI-ION SECONDARY BATTERY INCLUDING ADDITIVES FOR OVERCHARGE INHIBITION AND LI-ION SECONDARY BATTERY THEREOF

摘要

PURPOSE: Provided are electrolytes for a Li-ion secondary battery which include additives for controlling overcharge to reduce overcharge current by redox-shuttle mechanism when the battery is overcharged so that they show superior battery stability in overcharge. CONSTITUTION: The electrolytes for the Li-ion secondary battery comprise the components of: the additives for overcharge inhibition represented by formula 1, in which R1 and R2 are respectively same or different and independently H, CH3, CH2NH2, CH2COCH3 or CH2CHOHCH3; lithium salts which are solved in organic solvent and acted as the supply source of Li ions to promote the migration of Li ions between cathode and anode; and an insoluble organic solvent.