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

Provided are an electrolyte additive, a non-aqueous electrolyte, and a lithium secondary battery including the same. Specifically, the electrolyte additive including a compound represented by Formula 1 provides a lithium secondary battery with excellent cycle characteristics by forming a robust SEI layer on the surface of the negative electrode.