NONAQUEOUS ELECTROLYTIC SOLUTION AND POWER STORAGE DEVICE USING THE SAME

To provide a nonaqueous electrolytic solution capable of improving capacity retention rate after a cycle test, and a power storage device using the same.SOLUTION: There are provided a nonaqueous electrolytic solution for a power storage device which contains a compound represented by the following general formula (I), in a nonaqueous electrolytic solution where an electrolyte salt is dissolved in a nonaqueous solvent; and a power storage device. (In the formula, G represents a monosaccharide residue or a polysaccharide residue with 2-10 monosaccharide units, but does not contain a hydroxy group derived from sugar. In the formula, R1 represents a 1-8C alkyl group, R2 represents a 1-8C alkyl group in which at least one hydrogen atom may be substituted with a fluorine atom, m represents 0 or 1, n represents an integer of 1 or more, and m+n≥2 is satisfied.)SELECTED DRAWING: None 【課題】サイクル試験後の容量維持率を向上できる非水電解液およびそれを用いた蓄電デバイスを提供する。【解決手段】非水溶媒に電解質塩が溶解されている非水電解液において、下記一般式（Ｉ）で表される化合物を含有する蓄電デバイス用非水電解液および蓄電デバイス。（式中、Ｇは単糖残基、または２〜１０個の単糖単位を含む多糖類残基を表すが、Ｇは糖由来の水酸基は含有しない。式中、Ｒ１は炭素数１〜８のアルキル基を表し、Ｒ２は少なくとも１つの水素原子がフッ素原子で置換されていても良い炭素数１〜８のアルキル基、ｍは０または１を表し、ｎは１以上の整数を表し、ｍ＋ｎ≧２である。）【選択図】なし