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公开(公告)号：US20230377807A1
公开(公告)日：2023-11-23
申请号：US18360528
申请日：2023-07-27
Inventor： Yuichiro TSUBAKI , Tatsuji AOYAMA , Kazuyo SAITO , Yuji OTSUKA
Abstract: An electrolytic capacitor includes a capacitor element and an electrolytic solution. The capacitor element includes: an anode body including a dielectric layer; a cathode body; and a solid electrolyte in contact with the dielectric layer. The electrolytic solution includes a solvent, a solute, and a polymer component. The solvent includes an ethylene glycol compound. The polymer component includes polyalkylene glycol. The polyalkylene glycol includes at least one of (i) a mixture of polyoxyethylene and polyoxypropylene and (ii) an oxyethylene-oxypropylene copolymer. In the polyalkylene glycol, a molar ratio m/n of oxyethylene units to oxypropylene units is greater than 1.
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公开(公告)号：US20220059292A1
公开(公告)日：2022-02-24
申请号：US17518849
申请日：2021-11-04
Inventor： Kazuyo SAITO , Yuichiro TSUBAKI , Tatsuji AOYAMA
Abstract: An electrolytic capacitor includes a capacitor element and electrolytic solution. The capacitor element includes an anode body with an oxide film, and a solid electrolyte contacting the oxide film. The electrolytic solution contains a solvent and a solute. The solvent contains at least one selected from the group consisting of a lactone compound, a glycol compound, and a sulfone compound. The solute includes a first acid component and a base component. The first acid component includes at least one of a benzenedicarboxylic acid and a derivative of the benzenedicarboxylic acid. The base component includes at least one of an amine and an amidine. A concentration of the solute in the electrolytic solution ranges from 15% by mass to 40% by mass, inclusive. A ratio (V/Vw) of a formation voltage V of the oxide film to a rated voltage Vw of the electrolytic capacitor is less than or equal to 1.7.
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公开(公告)号：US20230360860A1
公开(公告)日：2023-11-09
申请号：US18042433
申请日：2021-07-21
Inventor： Kazuyo SAITO , Yuichiro TSUBAKI , Tatsuji AOYAMA , Kengo UCHIHASHI
Abstract: An electrolytic capacitor including a capacitor element, and a liquid component. The capacitor element includes an anode body having a dielectric layer at a surface of the anode body, and a conductive polymer component covering part of the dielectric layer. The liquid component contains a first solvent, a base component, and an acid component. The first solvent is at least one selected from the group consisting of a polyol and a derivative thereof. The base component contains a first base a conjugate acid of which has an acid dissociation constant of 5 or more and 10 or less and which has no boiling point or a boiling point of 100° C. or higher.
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Patent Agency Ranking
公开(公告)号：US20230050288A1
公开(公告)日：2023-02-16
申请号：US17783125
申请日：2020-12-08
Inventor： Yuichiro TSUBAKI , Tatsuji AOYAMA , Kazuyo SAITO , Liyi CHEN , Kengo UCHIHASHI
Abstract: A liquid component for an electrolytic capacitor includes at least one central atom selected from the group consisting of boron, aluminum, and silicon, and a ligand having a plurality of ligand atoms bonded to the central atom. The ligand atoms are at least one selected from the group consisting of oxygen and nitrogen, and are bonded to a carbon atom having no oxo group.
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公开(公告)号：US20250046528A1
公开(公告)日：2025-02-06
申请号：US18723795
申请日：2022-12-26
Inventor： Yuichiro TSUBAKI , Tatsuji AOYAMA , Kazuyo SAITO
Abstract: An electrolytic capacitor includes a container with an opening, a capacitor element contained in the container, and a sealing body that seals the opening. The capacitor element includes an anode body provided with a dielectric layer on its surface, and a conductive polymer that covers a portion of the dielectric layer. The sealing body includes an elastic polymer. An antioxidant component is present in a space closed by the container and the sealing body. The antioxidant component includes a first antioxidant having no boiling point or a boiling point of 320° C. or higher.
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公开(公告)号：US20230368982A1
公开(公告)日：2023-11-16
申请号：US18246089
申请日：2021-09-24
Inventor： Yuichiro TSUBAKI , Kazuyo SAITO , Tatsuji AOYAMA
Abstract: An electrolytic capacitor includes a capacitor element and a liquid component, wherein the capacitor element includes an anode body having a dielectric layer on a surface thereof, and a conductive polymer compound covering at least a portion of the dielectric layer. The liquid component includes an acid component, a base component, a solvent, and an antioxidant. The solvent includes water and a polyol compound. The acid component includes a coordination compound including a central atom, and an organic molecule having a plurality of coordination atoms bonded to the central atom, and at least one of the plurality of coordination atoms is an oxygen atom bonded to a carbonyl group.
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公开(公告)号：US20220392713A1
公开(公告)日：2022-12-08
申请号：US17884290
申请日：2022-08-09
Inventor： Yuichiro TSUBAKI , Kazuyo SAITO , Tatsuji AOYAMA
Abstract: An electrolytic capacitor includes an anode body having a dielectric layer disposed on a surface of the anode body, a solid electrolyte layer that is in contact with the dielectric layer, and an electrolytic solution. The solid electrolyte layer includes a conductive polymer. The electrolytic solution contains a first base component, a first acid component, and a second acid component. The first base component includes an amidine compound. The first acid component includes a composite compound of an inorganic acid and an organic acid. The second acid component includes at least one selected from a group consisting of boric acid, phosphoric acid, phosphorous acid, hypophosphorous acid, and phosphonic acid.
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公开(公告)号：US20220189705A1
公开(公告)日：2022-06-16
申请号：US17688359
申请日：2022-03-07
Inventor： Yuichiro TSUBAKI , Tatsuji AOYAMA , Kazuyo SAITO , Yuji OTSUKA
Abstract: An electrolytic capacitor includes a capacitor element and an electrolytic solution. The capacitor element includes: an anode body including a dielectric layer; a cathode body; and a solid electrolyte in contact with the dielectric layer. The electrolytic solution includes a solvent, a solute, and a polymer component. The solvent includes an ethylene glycol compound. The polymer component includes polyalkylene glycol. The polyalkylene glycol includes at least one of (i) a mixture of polyoxyethylene and polyoxypropylene and (ii) an oxyethylene-oxypropylene copolymer. In the polyalkylene glycol, a molar ratio m/n of oxyethylene units to oxypropylene units is greater than 1.
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