ELECTROLYTIC SOLUTION AND ELECTROCHEMICAL ELEMENT PREPARED THEREFROM

摘要

An electrolytic solution wherein the solute is a salt of a quaternized derivative of an N,N,N'-trisubstituted amidine compound with a carboxylic or like acid, said amidine compound being exemplified by 1-methylimidazole, 1-methylbenzimidazole, 1,2-dimethylimidazoline, 1,2-dimethyl-1,4,5,6-tetrahydropyrimidine, 1,8-diazabicyclo[5.4.0]undecene-7, or 1,5-diazabicyclo[4.3.0]nonene-5; and an electrochemical element and an electrolytic capacitor each prepared therefrom. The obtained electrolytic capacitor and electrochemical elements such as an electrochromic display element are excellent in the thermal stability of the electolytic solution, have a high specific conductivity, and neither corrode nor deteriorate metal, resins and rubbers.