Electrolyte additive and electrolyte including the same and rechargeable lithium battery including the electrolyte

摘要

An electrolyte additive represented by chemical formula 1, for use in a rechargeable lithium battery, and an electrolyte solution including same;
wherein X 1 to X 5 are each independently a halogen atom or a halogen-containing group; and Z is represented by *-NR 1 R 2 .