Lithium Secondary Battery

Abstract: provided is a lithium secondary battery comprising: a positive electrode comprising a lithium nickel cobalt manganese-based oxide as a positive electrode active material; a negative electrode comprising a negative electrode active material composed of si; and a non-aqueous electrolyte comprising a lithium salt, an organic solvent and an additive, wherein the organic solvent comprises a compound of formula 1 and fluoroethylene carbonate, and the compound of formula 1 is comprised in greater than 15 wt % on the basis of the total of the non-aqueous electrolyte:

Inventor(s): Yoon Gyo Cho, Jung Min Lee, Chul Haeng Lee

CPC Classification: H01M10/4235 (PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY)

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