ELECTROLYTE ADDITIVE, ELECTROLYTIC SOLUTION AND ELECTROCHEMICAL DEVICE

The present application provides an electrolyte additive, an electrolytic solution, and an electrochemical device. The electrolyte additive includes a compound represented by formula 1 and a compound represented by formula 2, and the compound represented by formula 2 is selected from the group consisting of a compound represented by formula 2-A, a compound represented by formula 2-B, and a combination thereof.