a non-aqueous electrolyte for lithium secondary battery and lithium secondary battery including the same

The present invention relates to a lithium secondary battery of the high-temperature cycle life characteristics and high-temperature storage characteristics, and it includes a non-aqueous electrolyte lithium secondary battery improved. The present invention is characterized in that it comprises a phosphate borate (LiBF According to the present invention, the high temperature cycle life characteristics and high-temperature storage characteristics can be realized an improved lithium secondary battery.