NON-AQUEOUS ELECTROLYTE FOR LITHIUM-ION BATTERY AND LITHIUM-ION BATTERY USING THE SAME

The present invention provides a non-aqueous electrolyte for a lithium-ion battery and a lithium-ion battery using the non-aqueous electrolyte. The non-aqueous electrolyte includes (a) a lithium salt, (b) a non-aqueous organic solvent, and (c) at least one compound represented by formula 1; where the non-aqueous electrolyte further includes at least one of the following components (d) and (e): (d) a nitrile compound including at least one of 1,3,6-hexane trinitrile, glycerol trinitrile, and 3-methoxypropionitrile, and (e) vinyl sulfate. Through the synergy effect between them, the positive electrode is protected and meanwhile the negative electrode is also be protected to a certain extent, and an impedance of a film is lowered. The battery has an excellent high temperature storage performance, high temperature cycle performance and low temperature charge and discharge performance.