NON-AQUEOUS ELECTROLYTE AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

The present invention provides a non-aqueous electrolyte including a lithium salt and an organic solvent, wherein the non-aqueous electrolyte includes a compound represented by Formula 1 as the organic solvent, and includes the compound represented by Formula 1 in an amount of 25 wt% to 80 wt% based on the total non-aqueous electrolyte: wherein, in Formula 1, R and R are each independently any one selected from the group consisting of hydrogen (H), an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, a cycloalkenyl group having 3 to 12 carbon atoms, and an aryl group having 6 to 20 carbon atoms, and X may be a perfluoroalkyl group having 1 to 5 carbon atoms.