| abstract |
An electrolyte for a lithium secondary battery of the present invention comprises, as lithium salts, lithium bis(fluorosulfonyl)imide (LiFSI) and a second lithium salt while comprising, as additives, a novel borate-based lithium compound together with a second additive, and thus the electrolyte of the present invention can improve high-rate charge and discharge characteristics, high-temperature storage characteristics, and service life characteristic of a lithium secondary battery, and can exhibit an effect of increasing reversible capacity. |