Non-Aqueous Electrolyte Including Additive for Non-Aqueous Electrolyte, and Lithium Secondary Battery Including the Non-Aqueous Electrolyte

The present disclosure provides a non-aqueous electrolyte including an additive for a non-aqueous electrolyte represented by Formula 1 below: wherein, Rto Rmay each independently be any one selected from the group consisting of H, an alkenyl group having 2 to 20 carbon atoms, an alkynyl group having 2 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, a cycloalkenyl group having 3 to 12 carbon atoms, and a nitrile group.