METHOD OF MANUFACTURING POSITIVE ELECTRODE FOIL FOR MEDIUM AND HIGH VOLTAGE ALUMINIUM ELECTROLYTIC CAPACITOR

摘要

PROBLEM TO BE SOLVED: To provide a method of manufacturing a positive electrode foil for a medium and high voltage aluminium electrolytic capacitor controlled in its generation rate of aluminium hydroxide which precipitates during a chemical treatment with a boric acid electrolyte. SOLUTION: The method of manufacturing a positive electrode foil for a medium and high voltage aluminium electrolytic capacitor includes a process of soaking an extended high-purity aluminium foil into a strait chain polycarboxylic acid comprising oxalic acid, malonic acid, succinic acid, citric acid or tartaric acid before soaking it into hot deionized water to make a hydrate coat on it. COPYRIGHT: (C)2004,JPO&NCIPI