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US 6,285,543 B1Granted
Electrolytic solution for use in electrolytic capacitor and electrolytic capacitor
AssigneeRubycon Corporation
InventorsAkihiko Komatsu, Tetsushi Ogawara
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AssigneeRubycon Corporation
InventorsAkihiko Komatsu, Tetsushi Ogawara
Estimating the term…
An electrolytic solution for use in an electrolytic capacitor, having a solution containing a solvent consisting of 20 to 80% by weight of an organic solvent and 80 to 20% by weight of water, and at least one electrolyte selected from a carboxylic acid or a salt thereof and an inorganic acid or a salt thereof, having added thereto at least on nitro compound selected from nitrophenol, nitrobenzoic acid, dinitrobenzoic acid, nitroacetophenone and nitroanisole. The electrolytic solution has a low impedance and excellent low-temperature stability, along with good working life characteristics, and it can also exhibit an excellent hydrogen gas absorption function when an electrolytic solution contains a highly increased amount of water in its mixed solvent or when an electrolytic capacitor is used under high temperature conditions.
An electrolytic solution for use in an electrolytic capacitor, comprising a solvent consisting of 20 to 80% by weight of an organic solvent and 80 to 20% by weight of water, and at least one electrolyte selected from the group consisting of a carboxylic acid or a salt thereof and an inorganic acid or a salt thereof, having added thereto at least one nitro compound selected from the group consisting of nitrophenol, nitrobenzoic acid, dinitrobenzoic acid, nitroacetophenone and nitroanisole, said electrolytic solution being contained between a wound anode foil and a wound cathode foil opposed to the anode foil of said electrolytic capacitor.
An electrolytic capacitor comprising a capacitor element formed of a wound anode foil, a wound cathode foil opposed to the anode foil and a separator disposed between the anode foil and the cathode foil, and a electrolytic solution contained between the anode foil and the cathode foil, said electrolytic solution containing a solvent consisting of 20 to 80% by weight of an organic solvent and 80 to 20% by weight of water, and at least one electrolyte selected from the group consisting of a carboxylic acid or a salt thereof and an inorganic acid or a salt thereof, having added thereto at least one nitro compound selected from the group consisting of nitrophenol, nitrobenzoic acid, dinitrobenzoic acid, nitroacetophenone and nitroanisole.
Dependencies are inferred from the claim text.