Aluminum electrolytic capacitor
AssigneeSprague Electric Company
InventorsSidney D. Ross, Manuel Finkelstein
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Abstract
An aluminum electrolytic capacitor has a capacitor section of two aluminum electrode foils, at least one of which bears a barrier layer anodic oxide, wound with interleaved spacer material in contact with an electrolyte containing a phosphate salt, the cation of which is compatible with the cation of the electrolyte solute to prevent precipitation of a phosphate.
Claims5
An aluminum electrolytic capacitor comprising a rolled capacitor section having two electrode foils, one being an anode foil bearing a dielectric oxide and the second being a cathode foil, wound with interleaved spacer material and in contact with an electrolyte having solute dissolved in an organic solvent and containing as additive a soluble, substituted-ammonium dihydrogen phosphate having a cation selected from the group consisting of isopropylammonium, n-butylammonium, dimethylammonium, diethylammonium, diisopropylammonium, triethylammonium, tri-n-propylammonium, and morpholinium cations, said solute having a cation compatible with said phosphate cation.
Dependencies are inferred from the claim text.