| 摘要 |
PURPOSE:To suppress self discharge and increase shelf life by adding tricarbonimide to a nonaqueous system electrolyte. CONSTITUTION:A positive electrode 1 and a negative electrode 2 using lithium as an active material are spirally wound through a separator 3 impregnated with a nonaqueous system electrolyte comprising a solute selected from the group comprising LiPF6, LiClO4, LiCF3SO3, LiBF4, LiAsF6, and LiN(CF3SO2)2, a solvent selected from the group comprising ethylene carbonate, propylene carbonate, vinylene carbonate, 1,2-dimethoxyethane, dimethyl carbonate, diethyl carbonate, ethylmethyl carbonate, tetrahydrofuran, and 1,3-dioxane, and 0.1-30.0wt.% tricarbondiimide to constitute a spiral electrode body. The spiral electrode body is inserted into a battery can 4 also serving as a negative terminal. The negative electrode 2 is connected to the battery can 4 through a negative conductor 5, and the positive electrode 1 is connected to a battery cover 7 through a positive conductor 6. |
