ELECTROLYTIC SOLUTION, FOR ELECTRICAL STORAGE DEVICES SUCH AS BATTERIES AND CAPACITORS, CONTAINING SALT WHOSE CATION IS ALKALI METAL, ALKALINE EARTH METAL, OR ALUMINUM, AND ORGANIC SOLVENT HAVING HETEROELEMENT, METHOD FOR PRODUCING SAID ELECTROLYTIC SOLUTION, AND CAPACITOR INCLUDING SAID ELECTROLYTIC SOLUTION

摘要

Provided is an electrolyte solution wherein a metal salt and a solvent are present in novel states. An electrolyte solution according to the present invention contains a salt, wherein an alkali metal, an alkaline earth metal or aluminum serves as cations, and an organic solvent having a hetero element. This electrolyte solution is characterized in that with respect to the peak intensity ascribed to the organic solvent in a vibrational spectrum of the electrolyte solution, if Io is the original peak intensity of the organic solvent and Is is the intensity of a shifted peak of the organic solvent, Io and Is satisfy Is > Io.