| 摘要 |
The present invention provides a non-aqueous electrolyte, which comprises: i) a first lithium salt; ii) a lithium bisfluoro sulfonyl imid which is a second lithium salt; iii) a phosphazene-based compound which is a first additive; and iv) a non-aqueous organic solvent, and a lithium secondary battery comprising the same. The lithium secondary battery comprising the non-aquous electrolyte of the present invention, forms a rigid solid electrolyte interface (SEI) layer in a surface of a cathode when initially charging, and assigns flame retarding in a high temperature environment, thereby preventing decomposition, and an oxidation reaction in a surface of an anode, so as to improve an output property, and increasing output and capacity properties after storing at high temperature. |
