| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-aqueous electrolyte secondary battery in which stability and lithium ion conductivity are optimized and various characteristics are simultaneously improved such as lifetime performance and high temperature performance.SOLUTION: An electrolyte including an electrolyte salt and an electrolyte solvent further includes i) a cyclic carbonate compound substituted with at least one halogen element, such as 3-fluoroethylene carbonate, and (ii) a compound having a vinyl group in a molecule thereof, such as tetraethylene glycol diacrylate. Thereby, a solid electrolyte interface layer is formed partially or totally on a surface of an electrode by electrical reduction of the compounds of i) and ii). |
