| 摘要 |
PROBLEM TO BE SOLVED: To obtain a high ripple resistant and high temperature resistant capacitor with a long lifetime by suppressing hydration deterioration, caused by a reaction between an oxide film of a positive electrode foil and water, and increase of a leak current even when water is added to a certain extent or water is generated to a certain extent in manufacturing an electrolyte in order to reduce resistivity corresponding to a high ripple current, concerning an aluminum electrolyte capacitor that is obtained by impregnating an electrolyte in a capacitor element wound with etched anode and cathode foils with a separator interposed therebetween and then storing the capacitor element in a case.SOLUTION: Provided is the electrolyte for an electrolytic capacitor added with at least one kind of organic phosphonic acid, having an organic phosphonic acid part and a carboxylic acid part, and an ammonium salt thereof in an electrolyte for an electrolytic capacitor whose solute is an acid including a long chain carboxylic acid and boric acid with polyvalent alcohols being a main solvent. |
