Electron aluminum foil initial section formation liquid additive and adding method thereof

The invention relates to an electron aluminum foil initial section formation liquid additive and an adding method thereof. The additive is olefin higher carboxylic acid and ammonium salts of the olefin multi-carbon carboxylic acid and has the content of 0.005 to 0.200 wt%. The olefin multi-carbon carboxylic acid and the ammonium salts of the olefin multi-carbon carboxylic acid are one kind or several kinds in maleic acid, fumaric acid and ammonium hydrogen maleate. When the additive is added according to the method, the property of the anode foil of an aluminum electrolytic capacitor can be more stable, and each index is not reduced after storage for three months.