| 摘要 |
PURPOSE:To increase alloying speed and to enhance charge-discharge performance by selecting a solvent of an alloying electrolyte from among solvents having sulfonyl group or dimethoxy group, 1,3-dioxolane, and its alkyl derivative. CONSTITUTION:One solvent is selected from among solvents having sulfonyl group, a solvent having dimethoxy group, 1,3-dioxolane, and its alkyl derivative, for a solvent of an alloying electrolyte contained in a separator 3 made of a polypropylene porous film interposed between a positive electrode 1 and a negative electrode 2. Since these solvents have no carbonyl group, lithium does not react on the solvent, and carbonate film does not form on a lithium alloy. Alloying speed is increased and charge-discharge performance is enhanced. |
