The present invention is to provide a nonaqueous electrolytic solution capable of enhancing electrochemical characteristics in a broad temperature range, an energy storage device using the nonaqueous electrolytic solution, and a specific trifluoromethylben...

Object To provide a method for producing a bis-quaternary ammonium salt efficiently and a novel synthetic intermediate thereof. Solution The present invention relates to a method for producing a bis-quaternary ammonium salt represented by a general formula...