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(shuō)明書
Among these, LiPF6, LiPO2F2, LiN(SO2F)2, lithium methyl sulfate, lithium ethyl sulfate, or lithium difluorobis(oxalato)phosphate is preferably used, and LiPF6, LiPO2F2, LiN(SO2F)2, lithium methyl sulfate, or lithium ethyl sulfate is most preferably used. The concentration of the lithium salt in the non-aqueous electrolytic solution according to the first aspect is, in relation to the non-aqueous solvent, 0.8 M (mol/L) or more, preferably 1.0 M or more, and more preferably 1.1 M or more. The upper limit of the concentration of the lithium salt is 1.5 M or less, preferably 1.45 M or less, and more preferably 1.4 M or less. The concentration of the lithium salt in the non-aqueous electrolytic solution according to the second aspect is, in relation to the non-aqueous solvent, 0.9 M (mol/L) or more, preferably 1.0 M or more, more preferably 1.1 M or more, further preferably 1.15 M or more, and particularly preferably 1.2 M or more. The upper limit of the concentration of the lithium salt is 1.5 M or less, preferably 1.45 M or less, and more preferably 1.4 M or less.
