ELECTROLYTE AND LITHIUM-ION BATTERY USING THE SAME

An additive adapted for an electrolyte of a lithium ion battery, includes a compound represented by Formula I or Formula II: wherein R-R, R and R are each independently selected from hydrogen atom, halogen atom, silane, a substituted or unsubstituted C1-C12 alkyl group, a substituted or unsubstituted C1-C12 alkenyl group, and a substituted or unsubstituted C6-C26 aryl group; R-R and R-R are each independently selected from silane, a substituted or unsubstituted C1-C12 alkyl group, a substituted or unsubstituted C1-C12 alkenyl group, and a substituted or unsubstituted C6-C26 aryl group. The additive can reduce the surface activity of the positive electrode and inhibit the oxidative decomposition of the electrolyte, thereby improving the high temperature storage performance and high temperature cycle performance of the ternary lithium ion battery under a high voltage of 4.4V.