| 摘要 |
PURPOSE:To provide a nonaqueous solvent lithium secondary battery which has high conductivity, high charge and discharge efficiency of lithium with less gas generation, is stable against heat as compared with a conventional battery system and thus has no possibility of igniting even in the case the temperature rises extremetly. CONSTITUTION:Regarding a nonaqueous solvent-type secondary battery having a negative pole which can discharge and charge lithium ion, a positive pole which can discharge and charge lithium ion, and an electrolytic solution consisting of a nonaqueous solvent and an ion-dissociative lithium salt dissolved in the solvent, as the nonaqueous solvent, a mixture of three kinds of solvents; ethylene carbonate, propylene carbonate, and sulfurane is used. As a result, a nonaqueous solvent-type lithium secondary battery having excellent charge- discharge characteristics, high safety and reliability is obtained. |
