Non-aqueous electrolyte and lithium secondary battery comprising same

Abstract

The present invention provides a non-aqueous electrolyte comprising a lithium salt, an organic solvent, and a compound of chemical formula 1. [Chemical formula 1] In chemical formula 1, R1 is any one selected from the group consisting of R, a C1-10 alkyl group, which can be substituted with at least one fluorine, a C2-10 alkenyl group, which can be substituted with at least one fluorine, a C2-10 alkynyl group, which can be substituted with fluorine, OR', OCOR', and F, R' is any one selected from the group consisting of a C1-10 alkyl group, which can be substituted with fluorine, a C2-10 alkenyl group, which can be substituted with fluorine, and a C2-10 alkynyl group, which can be substituted with fluorine, and R is a structure represented by chemical formula 2. [Chemical formula 2] In chemical formula 2, each of Rx and Ry is independently either H or F.