| 摘要 |
PURPOSE:To improve low temperature characteristics and restrict increase of an inner resistance after discharge by adding compound including antimony element to organic electrolyte consisting of organic solvent including cyclic ether and lithium salt dissolved in it. CONSTITUTION:Ester is included in organic solvent by more than 1% by the volume ratio. Lithium salt shall be at least one of LiClO4 and LiCF3SO3. Compound including antimony elements shall be that having a bond of Sb-F, and it shall be at least one of SbF5, solvate of SbF5, and double salt of SbF5 with other salt. The double salt of SbF5 with other salt shall be that including SbF5<->. The compound including antimony element shall be added by more than 10<-3>mol/l to the whole electrolyte, and its addition quantity shall be less than 30% of dissolved lithium salt quantity, while it shall be more than 10<-3> by the mol ratio to cyclic ether. |
