Non-aqueous electrolytic solution for lithium secondary battery or lithium ion capacitor, and lithium secondary battery or lithium ion capacitor using the same
摘要
說明書
The non-aqueous electrolytic solution according to the first aspect of the present invention includes a fluorinated chain ester as a chain ester. As the fluorinated chain ester used in the present invention, a chain ester in which an arbitrary carbon atom(s) is substituted with a fluorine atom(s) may be mentioned. In particular, a compound in which the carbon atom(s) in the alkyloxy group moiety of a chain ester is substituted with a fluorine atom(s) may be suitably mentioned.
As the fluorinated chain ester, in particular, the compound represented by the following general formula (I) may be suitably mentioned.
Suitable specific examples of the fluorinated chain ester represented by the general formula (I) include: one or more selected from the group consisting of 2,2-difluoroethyl acetate (DFEA), 2,2,2-trifluoroethyl acetate (TFEA), 2,2-difluoroethyl methyl carbonate (DFEMC), 2,2,2-trifluoroethyl methyl carbonate (TFEMC), methyl trifluoroacetate, ethyl trifluoroacetate, 2,2-difluoroethyl trifluoroacetate, and 2,2,2-trifluoroethyl trifluoroacetate.
