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公开(公告)号：US20200227208A1
公开(公告)日：2020-07-16
申请号：US16833951
申请日：2020-03-30
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：US20210043390A1
公开(公告)日：2021-02-11
申请号：US17080932
申请日：2020-10-27
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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Patent Agency Ranking
公开(公告)号：US20220351913A1
公开(公告)日：2022-11-03
申请号：US17810619
申请日：2022-07-04
Inventor： KAZUYO SAITO , YUICHIRO TSUBAKI , TATSUJI AOYAMA
IPC: H01G9/035
Abstract: An electrolytic capacitor includes a capacitor element and a liquid component. The capacitor element includes an anode body that includes a dielectric layer on a surface of the anode body and a conductive polymer that covers a part of the dielectric layer. The liquid component includes a sugar alcohol component and a polyalkylene glycol component. The sugar alcohol component contains at least one selected from the group consisting of a sugar alcohol having four or more hydroxy groups and a derivative of the sugar alcohol.
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公开(公告)号：US20180119306A1
公开(公告)日：2018-05-03
申请号：US15724303
申请日：2017-10-04
Inventor： YUICHIRO TSUBAKI , TATSUJI AOYAMA , KAZUYO SAITO
IPC: C25D11/12 , H01G9/00 , H01G9/022 , H01G9/028 , H01G9/032 , H01G9/035 , H01G9/15 , H01G9/07 , C25D11/08 , H01G9/055 , H01G9/04
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 electrolyte solution. The solid electrolyte layer includes a π-conjugated conductive polymer. The electrolyte solution contains a solvent and a solute, and the solvent contains a glycol compound and a sulfone compound. A proportion of the glycol compound contained in the solvent is 10% by mass or more. A proportion of the sulfone compound contained in the solvent is 30% by mass or more. A total proportion of the glycol compound and the sulfone compound contained in the solvent is 70% by mass or more.
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公开(公告)号：US20220336160A1
公开(公告)日：2022-10-20
申请号：US17810618
申请日：2022-07-04
Inventor： KAZUYO SAITO , YUICHIRO TSUBAKI , TATSUJI AOYAMA
Abstract: An electrolytic capacitor includes a capacitor element and a liquid component. The capacitor element includes an anode body that includes a dielectric layer on a surface of the anode body and a conductive polymer that covers a part of the dielectric layer. The liquid component includes a first solvent and a polyalkylene glycol component. The first solvent contains at least a glycerin component.
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公开(公告)号：US20200294730A1
公开(公告)日：2020-09-17
申请号：US16889314
申请日：2020-06-01
Inventor： YUICHIRO TSUBAKI , KAZUYO SAITO
Abstract: An electrolytic capacitor includes an anode body, 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 ion conductor that is liquid at room temperature. The solid electrolyte layer includes a conductive polymer. The ion conductor includes a solvent, an acid component, and a base component. The content proportion of the solvent in the ion conductor is more than 10% by mass and less than or equal to 60% by mass. The total content proportion of the acid component and the base component in the ion conductor is more than or equal to 40% by mass and less than 90% by mass. A melting point of the ion conductor is lower than or equal to −10° C.
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公开(公告)号：US20200211785A1
公开(公告)日：2020-07-02
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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