ELECTROLYTIC SOLUTION AND BATTERY

To provide an electrolytic solution which contains a sulfonyl imide compound such as LiFSI and reduces self-discharge at a high temperature.SOLUTION: An electrolytic solution contains: a sulfonyl imide compound represented by a following formula (1) defined by M1N(R1SO2)(R2SO2) (where M1 represents an alkali metal atom; and R1 and R2 are the same or different and each represent a fluorine atom, a C1-6 alkyl group, or a C1-6 fluoroalkyl group); and a compound represented by a following formula (2) defined by M2SiO3 (where M2 represents an alkali metal atom or an alkaline earth metal atom).SELECTED DRAWING: None 【課題】ＬｉＦＳＩ等のスルホニルイミド化合物を含み、かつ、高温時の自己放電が抑制された電解液を提供する。【解決手段】下記式（１）；Ｍ１Ｎ（Ｒ１ＳＯ２）（Ｒ２ＳＯ２）（１）（式中、Ｍ１はアルカリ金属原子を表す。Ｒ１及びＲ２は、同一又は異なって、フッ素原子、炭素数１～６のアルキル基又は炭素数１～６のフルオロアルキル基を表す。）で表されるスルホニルイミド化合物と、下記式（２）；Ｍ２ＳｉＯ３（２）（式中、Ｍ２は、アルカリ金属原子又はアルカリ土類金属原子を表す。）で表される化合物とを含むことを特徴とする電解液。【選択図】なし