| abstract |
PROBLEM TO BE SOLVED: To provide an electrolytic solution for an electrochemical capacitor having excellent withstand voltage and long-term reliability, and to provide an electrochemical capacitor using the same. [MEANS FOR SOLVING PROBLEMS] In an electrolytic solution for an electrochemical capacitor in which an electrolyte salt containing a quaternary ammonium salt as a main component is dissolved in a non-aqueous solvent, the total content of tertiary amine and tertiary ammonium salt is 2 mmol / kg or less. An electrolytic solution for an electrochemical capacitor. 2.1 using the electrolytic solution for an electrochemical capacitor according to In addition, at least one of the positive electrode and the negative electrode is a polarizable electrode containing a carbonaceous substance as a main component. |