Electrolyte additive, electrolyte, lithium ion secondary battery containing the same and use thereof

Abstract

An electrolyte additive includes any one or more compounds in a group consisting of compounds in Formula (1) and Formula (2) below, wherein R1 to R4 are respectively independently selected from a group consisting of H, C1-6 alkyl and halogen, R5 and R6 are respectively independently selected from a group consisting of H, C1-6 alkyl and aromatic hydrocarbon, R7 is independently selected from a group consisting of H, C1-6 alkyl, C1-6 alkoxy, a nitrile group, an ester group, an amide group, an amino group, and a maleimide group, optionally, R5 and R6 are respectively combined with R7 or together with R7 and atoms to which they are connected to form a 6-14-membered ring structure.

Dependencies are inferred from the claim text.