Non-aqueous electrolyte secondary battery

摘要

A non-aqueous electrolyte secondary battery comprises rechargeable positive and negative electrodes and a non-aqueous electrolyte. The positive electrode comprises at least one selected from LiCo02, LiMn204 and LiNi02 and the negative electrode consists most of alkai metals such as lithium, etc. The non-aqueous electrolyte contains lithium salts and has concentration ranging from 0.002 to 1.0 mol/liter of at least one acid anhydride selected from acetic anhydride, benzoic anhydride, succinic anhydride, phtalic anhydride and maleic anhydride.