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

The present disclosure provides a non-aqueous electrolyte including an additive for a non-aqueous electrolyte, which is represented by the following Chemical Formula 1: In Chemical Formula 1, Rto Rare each independently any one selected from the group consisting of H, an alkyl group having 1 to 10 carbon atoms, and an alkoxy group having 1 to 10 carbon atoms, and R may be an aliphatic unsaturated hydrocarbon group having 2 to 10 carbon atoms, or —OR′ (R′ is an aliphatic unsaturated hydrocarbon group having 2 to 10 carbon atoms).