| 摘要 |
PURPOSE:To prevent the deterioration of characteristics of a primary battery at the time of the long-term discharge with a light load by using a mixture of ring carbonic ester compound of a specific structure expression and the other nonaqueous solvent to increase the charge and discharge cycle characteristics of a secondary battery. CONSTITUTION:When a mixture of a ring carbonic ester compound represented by a structure expression and the other nonaqueous solvent is used, the charge and discharge characteristics of a secondary battery is remarkably increased. When it is applied to a primary battery, the deterioration of characteristics thereof at the time of the long-term discharge may be prevented. In the expression, R1 to R2: alkyl group represented by a general formula CnH2n+1, n=1 to 4; R4: hydrogen or alkyl group represented by a general formula CnH2n+1, n=1 to 4. |
