ELECTROLYTE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

摘要

Provided are an electrolyte for a lithium secondary battery which is not oxidized/decomposed when allowed to stand at a high temperature under high voltage, so as to inhibit generation of gas to prevent expansion of the battery, thereby reducing a battery thickness increase rate, and simultaneously having an excellent storage property at a high temperature, and a lithium secondary battery including the same.

主权项

1. An electrolyte for a secondary battery comprising:
a lithium salt; a non-aqueous organic solvent; and an ester compound represented by following Chemical Formula 1: wherein R1 and R2 are independently of each other a (C1-C5) alkyl group or a (C1-C5) alkoxy group; R11 to R14 are independently of one another hydrogen, a (C1-C5) alkyl group, a (C1-C5) alkoxy group or R15 and R16 are independently of each other hydrogen, a (C1-C5) alkyl group or a (C1-C5) alkoxy group; o is an integer of 0 to 3; m is an integer of 0 to 6; n is an integer of 0 to 6; and m and n are not 0 at the same time.