| 摘要 |
PURPOSE:To concurrently obtain high energy density, high charging/discharging efficiency and a long life by specifying the mixing ratio of three kinds of solvents: ether, nonpolar solvent, and carbonate or gamma-butyrolactone, in an electrolyte. CONSTITUTION:A mixed solvent added with a nonpolar solvent to a mixed solvent consisting of ether and carbonate or gamma-butyrolectone is mixed at the ratio of ether 51-95vol.%, nonpolar solvent 2-20vol.% and carbonate or gamma- butyrolactone 3-47vol.%. Excellent energy density, cycle life and charging/ discharging efficiency are obtained, and the occurrence of dendrites on a negative electrode can be prevented. |
