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US 4,786,429 AGranted
Electrolyte for aluminum electrolytic capacitor
AssigneeMitsubishi Petrochemical Co., Ltd.
InventorsShoichiro Mori, Makoto Ue, Kazuhiko Ida
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AssigneeMitsubishi Petrochemical Co., Ltd.
InventorsShoichiro Mori, Makoto Ue, Kazuhiko Ida
Estimating the term…
An electrolyte for aluminum electrolytic capacitor is described, comprising a solution of, as a solute, a quaternary ammonium salt having as an anion component the conjugated base of an inorganic acid compound selected from the group consisting of (1) boric acid, (2) phosphoric acid, (3) phosphorous acid and phosphorous acid monoesters, and phosphonic acids, and phosphonic acid monoesters, (4) hypophosphorous acid and phosphinic acids, (5) alkylboric acids and arylboric acids, (6) silicic acid, and (7) carbonic acid and carbonic acid monoesters, dissolved in an aprotic solvent mainly composed of .gamma.-butyrolactone. This electrolyte can reduce the internal resistance of the electrolytic cpacitor and broaden the temperature range over which the electrolytic capacitor can be used.
An electrolyte for an aluminum electrolytic capacitor consisting essentially of a solution of a solute of a quaternary ammonium salt having as an anion component the conjugate base of an inorganic acid compound selected from the group consisting of
Dependencies are inferred from the claim text.