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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
Inventor： Yuichiro Tsubaki , Kazuyo Saito , Tatsuji Aoyama
Abstract: 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：US11715605B2
公开(公告)日：2023-08-01
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：US11545305B2
公开(公告)日：2023-01-03
申请号：US17411651
申请日：2021-08-25
Inventor： Tatsuji Aoyama , Kazuhiro Takatani , Kazunari Imamoto , Yoshiaki Ishimaru
IPC: H01G9/00 , H01G9/028 , C07D513/04 , C07D513/10 , C07D513/14 , C07D519/00 , H01G9/042 , H01G9/15 , H01G9/055
Abstract: An electrolytic capacitor includes a capacitor element, a solid electrolyte layer, an electrolyte solution. The capacitor element has an anode foil with a dielectric layer, and a cathode foil. The solid electrolyte layer is provided between the anode foil and the cathode foil. And the capacitor element is impregnated with the electrolyte solution. The cathode foil includes a covering layer that contains at least one metal selected from titanium and nickel or a compound of the at least one metal. And the solid electrolyte layer contains a conductive polymer, a polymer dopant, and a base component.
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公开(公告)号：US11158463B2
公开(公告)日：2021-10-26
申请号：US16681397
申请日：2019-11-12
Inventor： Tatsuji Aoyama , Kazuhiro Takatani , Kazunari Imamoto , Yoshiaki Ishimaru
IPC: H01G9/00 , H01G9/028 , C07D513/04 , C07D513/10 , C07D513/14 , C07D519/00 , H01G9/042 , H01G9/15 , H01G9/055
Abstract: An electrolytic capacitor includes a capacitor element, a solid electrolyte layer, and a liquid substance. The capacitor element includes an anode foil with a dielectric layer, and a cathode foil. The solid electrolyte layer is provided between the anode foil and the cathode foil. The capacitor element is impregnated with the liquid substance that includes a solvent and a solute. The solute contains one of an acid component, a nitro compound, or a phenol compound. The cathode foil includes a covering layer that contains at least one selected from the group consisting of titanium, nickel, a compound including titanium, and a compound including nickel. And the solid electrolyte layer contains a conductive polymer and a base component. An electrolytic capacitor includes a capacitor element, a solid electrolyte layer, and a liquid substance. The capacitor element includes an anode foil with a dielectric layer, and a cathode foil. The solid electrolyte layer is provided between the anode foil and the cathode foil. The capacitor element is impregnated with the liquid substance that includes a solvent and a solute. The solute contains at least one selected from the group consisting of an acid component, a nitro compound, and a phenol compound. The cathode foil includes a covering layer that contains at least one selected from the group consisting of titanium, nickel, a compound including titanium, and a compound including nickel. And the solid electrolyte layer contains a conductive polymer and a base component.
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公开(公告)号：US11081286B2
公开(公告)日：2021-08-03
申请号：US16562033
申请日：2019-09-05
Inventor： Shumpei Matsushita , Tomoyuki Tashiro , Takayuki Matsumoto , Tatsuji Aoyama
Abstract: A method for manufacturing an electrolytic capacitor includes a first step, a second step, and a third step. In the first step, a capacitor element is formed. The capacitor element includes an anode body, a cathode body, and a separator. The anode body includes a dielectric layer formed on a surface of the anode body. And the separator is disposed between the anode body and the cathode body. In the second step, the capacitor element is impregnated with a treatment solution containing an acid component and a base component. In the third step, the capacitor element is, after the second step, impregnated with a conductive polymer dispersion in a state that a part of the treatment solution remains in the capacitor element. The conductive polymer dispersion is obtained by dispersing, in a solvent, conductive polymer particles each including polyanion. A pH of the treatment solution is higher than a pH of the conductive polymer dispersion.
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Patent Agency Ranking
公开(公告)号：US10522297B2
公开(公告)日：2019-12-31
申请号：US15852315
申请日：2017-12-22
Inventor： Daisuke Kubo , Masayuki Takahashi , Yukihiro Shimasaki , Tomoyuki Tashiro , Tatsuji Aoyama
Abstract: A power storage device has a power storage element and an electrolytic solution. The power storage element includes an anode body, a cathode body opposed to the anode body, and a separator interposed between the anode body and the cathode body. The separator includes a separator base material and a conductive polymer deposited on the separator base material. The power storage element is impregnated with the electrolytic solution. The separator has a first surface layer, which includes a first surface opposed to the anode body, and a second surface layer, which includes a second surface opposed to the cathode body. An amount of the conductive polymer deposited in a first separator half body, which is a part from a center of the separator to the first surface, is greater than an amount of the conductive polymer deposited in a second separator half body, which is a part from the center of the separator to the second surface.
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公开(公告)号：US10340089B2
公开(公告)日：2019-07-02
申请号：US15378227
申请日：2016-12-14
Inventor： Tatsuji Aoyama , Yukiya Shimoyama , Junya Kushizaki , Takuya Maruta
Abstract: A method for producing an electrolytic capacitor according to the present disclosure includes a first step of preparing a capacitor element that includes an anode body having a dielectric layer; a second step of impregnating the capacitor element with a first treatment solution containing at least a conductive polymer and a first solvent; and a third step of impregnating, after the second step, the capacitor element, in which at least a part of the first solvent remains, with a second treatment solution containing a coagulant to coagulate the conductive polymer.
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48.发明授权公开(公告)号：US10147552B2
公开(公告)日：2018-12-04
申请号：US14859234
申请日：2015-09-18
Inventor： Kazuhiro Takatani , Tatsuji Aoyama
Abstract: A conductive polymer microparticle dispersion contains a solvent, and polythiophene microparticles dispersed in the solvent. The polymerization unit of the polythiophene is one of thiophene and derivatives thereof, and the polythiophene contains a polyanion as a dopant. The conductive polymer microparticle dispersion has a pH value of 3 or greater and contains a solvent-insoluble iron compound containing iron with a concentration of 450 ppm or less.
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公开(公告)号：US09892858B2
公开(公告)日：2018-02-13
申请号：US15323386
申请日：2015-06-26
Inventor： Tatsuji Aoyama , Yukiya Shimoyama , Junya Kushizaki , Takuya Maruta
IPC: H01G9/00
CPC classification number: H01G9/0032 , H01G9/0036 , H01G9/028
Abstract: A method for manufacturing an electrolytic capacitor includes: a first step of preparing a capacitor element including an anode having a dielectric layer; a second step of impregnating the capacitor element with a first processing solution including at least a conductive polymer and a first solvent; and a third step of swelling the conductive polymer after the second step, by impregnating the capacitor element with a second processing solution including a swelling agent while at least part of the first solvent remains in the capacitor element.
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公开(公告)号：US12300445B2
公开(公告)日：2025-05-13
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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