Gel electrolyte including additives for rechargeable lithium battery, and rechargeable lithium battery including same

A gel electrolyte for a rechargeable lithium battery includes a gel polymer including a repeating unit derived from a first monomer represented by A-L-E, a non-aqueous organic solvent, a lithium salt, and an additive. A rechargeable lithium battery includes the gel electrolyte. The additive includes a compound selected from compounds represented by compounds represented by derivatives thereof, and combinations thereof.