Secondary lithium battery electrolyte and secondary lithium battery including the same

A secondary lithium battery electrolyte, comprising:

• a lithium salt;
• a nonaqueous organic solvent;
• and
• an electrolyte additive represented by Formula 1:
• where R1 through R5 are each independently hydrogen, halogen, a hydroxyl group, an amine group, an alkoxyl group, an ester group, a carbonate group, a carbonyl group, an unsubstituted or substituted alkyl group, an unsubstituted or substituted aryl group, an unsubstituted or substituted cycloalkyl group, an unsubstituted or substituted alkenyl group, an unsubstituted or substituted alkynyl group, or a combination thereof;
• n is an integer in the range of 1 to 4;
• wherein, when n is equal to or greater than 2, R2 through R5 are not simultaneously hydrogen and the R4 and R5 of the additional carbons are independently selected.