ELECTROLYTE FOR ELECTRIC DOUBLE LAYER CAPACITOR AND ELECTRIC DOUBLE LAYER CAPACITOR

摘要

PROBLEM TO BE SOLVED: To provide an electrolyte for an electric double layer capacitor, which has high electrical conductivity and breakdown voltage, shows stable liquid state over a wide temperature range, particularly at low temperatures without solidification and without deposition of salt, shows excellent electric characteristics, and also has superior long-period reliability. SOLUTION: The electrolyte for electric double layer capacitor is the electrolyte having quaternary ammonium salt dissolved in an organic solvent, wherein the organic solvent contains chain sulfone expressed by general formula (1) (R1, R2 represent linear or branched 1C-5C alkyl groups which may be identical or different), and the quaternary ammonium salt is represented by general formula (2) (m and n are integers of 4 to 6, and X-represents an acid component). COPYRIGHT: (C)2011,JPO&INPIT