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公开(公告)号：US12266481B2
公开(公告)日：2025-04-01
申请号：US17813940
申请日：2022-07-21
Inventor： Tatsuji Aoyama , Yuji Otsuka , Tomoyuki Tashiro , Kenta Chashiro , Yuichiro Tsubaki
Abstract: A method for producing an electrolytic capacitor includes: preparing an anode foil, a cathode foil, and a fibrous structure, the anode foil having a porous portion including a dielectric layer; preparing a conductive polymer-containing liquid, the conductive polymer-containing liquid containing a conductive polymer component and a first solvent;
forming a separator by removing at least a part of the first solvent after applying the conductive polymer-containing liquid to the fibrous structure; forming a capacitor element from the anode foil, the separator, and the cathode foil; and impregnating the capacitor element with an electrolytic solution. An electrical conductivity of the electrolytic solution at 30° C. is 3.0 mS/cm or more.-
52.发明授权公开(公告)号：US12014884B2
公开(公告)日：2024-06-18
申请号：US16984800
申请日：2020-08-04
Inventor： Mitsuhisa Yoshimura , Tatsuji Aoyama , Naomi Kurihara , Miwa Ogawa
CPC classification number: H01G9/048 , H01G9/0032 , H01G9/02 , H01G9/07
Abstract: An electrode foil for an electrolytic capacitor includes an anode electrode body including a base material part having a porous body portion, and a dielectric layer disposed on a surface of the porous body portion. The anode electrode body has a first main surface in which pores of the porous body portion are opened, a second main surface opposite to the first main surface, and an end surface connecting the first main surface and the second main surface. In the porous body portion, a first film thickness of the dielectric layer in an end surface vicinity region is larger than a second film thickness of the dielectric layer in a deep inner region, the end surface vicinity region being a region within a predetermined distance from the end surface, the deep inner region being a region located away from the first main surface and at a central portion in a direction parallel to the first main surface.
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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
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：US11651905B2
公开(公告)日：2023-05-16
申请号：US17348417
申请日：2021-06-15
Inventor： Yoshiaki Ishimaru , Kazunari Imamoto , Tatsuji Aoyama
CPC classification number: H01G9/0425 , H01G9/0029 , H01G9/0036 , H01G9/028 , H01G9/042 , H01G9/048 , H01G9/145 , H01G9/151
Abstract: An electrolytic capacitor includes an anode body including a dielectric layer, a cathode body, and a conductive polymer layer and a liquid component that are disposed between the anode body and the cathode body. The cathode body includes a base material part having an outer surface that is roughened surface and has a pore opened at the outer surface, and an inorganic conductive layer covering at least a part of the outer surface. The base material part includes a first coating layer disposed along at least a part of inner wall of the pore. The first coating layer contains phosphorus.
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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
Inventor： Yuichiro Tsubaki , Tatsuji Aoyama
Abstract: 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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Patent Agency Ranking
公开(公告)号：US11508530B2
公开(公告)日：2022-11-22
申请号：US17155644
申请日：2021-01-22
Inventor： Yuichiro Tsubaki , Tatsuji Aoyama
Abstract: 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
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：US10984960B2
公开(公告)日：2021-04-20
申请号：US15986455
申请日：2018-05-22
Inventor： Yuichiro Tsubaki , Tatsuji Aoyama
IPC: H01G11/04 , H01G9/035 , H01G11/60 , H01G11/80 , H01G11/56 , H01G9/10 , H01G9/028 , H01G9/15 , H01G11/86 , H01G9/145
Abstract: 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：US10121598B2
公开(公告)日：2018-11-06
申请号：US15376256
申请日：2016-12-12
Inventor： Tatsuji Aoyama , Tomoyuki Tashiro , Yukiya Shimoyama , 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 a conductive polymer and a first solvent; and a third step of impregnating the capacitor element with an electrolyte solution after the second step, the capacitor element being, in the third step, impregnated with the electrolyte solution while including a liquid.
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公开(公告)号：US09978526B2
公开(公告)日：2018-05-22
申请号：US15375288
申请日：2016-12-12
Inventor： Tatsuji Aoyama , Tomoyuki Tashiro , Junya Kushizaki , Shunpei Matsushita
CPC classification number: H01G9/0032 , H01G9/0029 , H01G9/008 , H01G9/02 , H01G9/028 , H01G9/035 , H01G9/07 , H01G9/145 , H01G9/15 , H01L23/5227 , H01L27/08 , H01L28/10 , H01L28/40
Abstract: A method for producing an electrolytic capacitor according to the present disclosure is characterized by including a first step of preparing a capacitor element that includes an anode body on which a dielectric layer is formed; a second step of impregnating the capacitor element with a first treatment solution containing a first solvent and a conductive polymer; a third step of impregnating, after the second step, the capacitor element with a second treatment solution containing a second solvent; and a fourth step of impregnating, after the third step, the capacitor element with an electrolyte solution containing a third solvent, both the second solvent and the third solvent being a protic solvent.
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