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公开(公告)号：US11935704B2
公开(公告)日：2024-03-19
申请号：US17884290
申请日：2022-08-09
发明人： Yuichiro Tsubaki , Kazuyo Saito , Tatsuji Aoyama
摘要： 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：US20230109930A1
公开(公告)日：2023-04-13
申请号：US18045654
申请日：2022-10-11
发明人： Yuichiro Tsubaki , Tatsuji Aoyama
摘要： An electrolytic capacitor includes an anode body having a dielectric layer; a solid electrolyte layer in contact with the dielectric layer of the anode body; and an electrolytic solution. The electrolytic solution contains a solvent and a solute. The solvent contains a glycol compound. The solute contains an acid component and a base component. A mass of the acid component in the solute is greater than a mass of the base component in the solute. The acid component contains a first aromatic compound having a hydroxyl group.
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公开(公告)号：US11508530B2
公开(公告)日：2022-11-22
申请号：US17155644
申请日：2021-01-22
发明人： Yuichiro Tsubaki , Tatsuji Aoyama
摘要： An electrolytic capacitor includes an anode body having a dielectric layer; a solid electrolyte layer in contact with the dielectric layer of the anode body; and an electrolytic solution. The electrolytic solution contains a solvent and a solute. The solvent contains a glycol compound. The solute contains an acid component and a base component. A mass of the acid component in the solute is greater than a mass of the base component in the solute. The acid component contains a first aromatic compound having a hydroxyl group.
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公开(公告)号：US11456120B2
公开(公告)日：2022-09-27
申请号：US16706615
申请日：2019-12-06
发明人： Yuichiro Tsubaki , Kazuyo Saito , Tatsuji Aoyama
摘要： An electrolytic capacitor includes an anode body, a cathode body, and a conductive polymer and a liquid component that are disposed between the anode body and the cathode body. The liquid component contains an acid component, a base component, and an aromatic additive. The acid component includes at least one of an aromatic carboxylic acid and an aromatic carboxylic acid derivative. The at least one of the aromatic carboxylic acid and the aromatic carboxylic acid derivative includes at least two carboxy groups and at least one aromatic ring. A content proportion of the base component in the liquid component is more than or equal to 1% by mass. The aromatic additive includes an electron withdrawing group and an electron donating group. A content ratio of the aromatic additive contained in the liquid component is more than or equal to 50 parts by mass with respect to 100 parts by mass of the conductive polymer.
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公开(公告)号：US10984960B2
公开(公告)日：2021-04-20
申请号：US15986455
申请日：2018-05-22
发明人： Yuichiro Tsubaki , Tatsuji Aoyama
IPC分类号： H01G11/04 , H01G9/035 , H01G11/60 , H01G11/80 , H01G11/56 , H01G9/10 , H01G9/028 , H01G9/15 , H01G11/86 , H01G9/145
摘要： An electrolytic capacitor includes a capacitor element, a liquid component, an outer case, and a sealing body. The capacitor element includes an anode body having a dielectric layer, and a solid electrolyte layer in contact with the dielectric layer. The liquid component is in contact with the solid electrolyte layer. The outer case houses the capacitor element and the liquid component. The sealing body seals an opening of the outer case. The liquid component contains a first component, which is an aliphatic polyol compound having two or more hydroxy groups per molecule. The aliphatic polyol compound includes at least one of a compound having a C3 carbon chain in a main chain and a compound having no C3 carbon chain but having one to four ether oxygen atoms in a main chain. The sealing body includes a polymer having no double bond in a main chain.
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公开(公告)号：US11978597B2
公开(公告)日：2024-05-07
申请号：US17783125
申请日：2020-12-08
发明人： Yuichiro Tsubaki , Tatsuji Aoyama , Kazuyo Saito , Liyi Chen , Kengo Uchihashi
摘要： 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：US11195664B2
公开(公告)日：2021-12-07
申请号：US16810105
申请日：2020-03-05
发明人： Kazuyo Saito , Yuichiro Tsubaki , Tatsuji Aoyama
摘要： An electrolytic capacitor includes a capacitor element and an electrolytic solution. The capacitor element includes an anode body with an oxide film, and a solid electrolyte in contact with 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：US10755863B2
公开(公告)日：2020-08-25
申请号：US16128442
申请日：2018-09-11
发明人： Tatsuji Aoyama , Yuichiro Tsubaki
摘要： An electrolytic capacitor includes an anode body with a dielectric layer; a solid electrolyte layer; and an electrolytic solution. The solid electrolyte layer includes a π-conjugated conductive polymer and an organic sulfonic acid. The electrolytic solution includes a solvent and an acid component, and the acid component includes a sulfuric acid. A concentration of the sulfuric acid in the electrolytic solution ranges from 2.9 ppm to 532 ppm, inclusive.
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公开(公告)号：US10079112B2
公开(公告)日：2018-09-18
申请号：US15619570
申请日：2017-06-12
摘要： A method for producing an electrolytic capacitor is performed in the following procedure. A solid electrolyte layer including a conductive polymer and a polyhydric alcohol is formed on an anode body on which a dielectric layer is formed. Then, the anode body on which the solid electrolyte layer is formed is impregnated with a first treatment liquid that contains an oxoacid having two or more hydroxy groups.
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公开(公告)号：US11804334B2
公开(公告)日：2023-10-31
申请号：US17892958
申请日：2022-08-22
发明人： Yuichiro Tsubaki , Kazuyo Saito , Tatsuji Aoyama
摘要： An electrolytic capacitor includes an anode body, a cathode body, and a conductive polymer and a liquid component that are disposed between the anode body and the cathode body. The liquid component contains an acid component, a base component, and an aromatic additive. The acid component includes at least one of an aromatic carboxylic acid and an aromatic carboxylic acid derivative. The at least one of the aromatic carboxylic acid and the aromatic carboxylic acid derivative includes at least two carboxy groups and at least one aromatic ring. A content proportion of the base component in the liquid component is more than or equal to 1% by mass. The aromatic additive includes an electron withdrawing group and an electron donating group. A content ratio of the aromatic additive contained in the liquid component is more than or equal to 50 parts by mass with respect to 100 parts by mass of the conductive polymer.
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