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公开(公告)号:US20220359127A1
公开(公告)日:2022-11-10
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.-
公开(公告)号:US20180240601A1
公开(公告)日:2018-08-23
申请号:US15963233
申请日:2018-04-26
Inventor: TATSUJI AOYAMA , KAZUHIRO TAKATANI , KAZUNARI IMAMOTO , YOSHIAKI ISHIMARU
CPC classification number: H01G9/0036 , H01G9/028 , H01G9/0425 , H01G9/055 , H01G9/151
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:US20180090279A1
公开(公告)日:2018-03-29
申请号:US15702643
申请日:2017-09-12
Inventor: YUICHIRO TSUBAKI , TATSUJI AOYAMA
CPC classification number: H01G9/035 , H01G9/0029 , H01G9/145
Abstract: An electrolytic capacitor includes an anode body having a dielectric layer on a surface of the anode body, a cathode body, and an electrolytic solution interposed between the anode body and the cathode body. The electrolytic solution contains a first ester compound and a second ester compound. The first ester compound is a condensate of boric acid and a sugar alcohol. The second ester compound contains at least one condensate selected from the group consisting of a condensate of boric acid and a monool compound and a condensate of boric acid and a polyol compound excluding a sugar alcohol.
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公开(公告)号:US20170092428A1
公开(公告)日:2017-03-30
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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公开(公告)号:US20250069819A1
公开(公告)日:2025-02-27
申请号:US18726790
申请日:2023-01-05
Inventor: YUTA MATSUKI , YOUHEI ASHIMORI , TATSUJI AOYAMA , SHINTARO WAKIYAMA
Abstract: An electrolytic capacitor includes a winding portion, an anode lead member, and a cathode lead member. The winding portion includes an anode foil and a cathode foil that are wound. The anode lead member is connected to the anode foil and extends in a first direction. The cathode lead member is connected to the cathode foil and extends in the first direction. The winding portion has a shape viewed in the first direction, the shape including a first peripheral region and a second peripheral region that are opposed to each other in a second direction intersecting the first direction, and a third peripheral region and a fourth peripheral region that are opposed to each other in a third direction intersecting the first direction and the second direction. The length of the winding portion in the third direction is larger than the length of the winding portion in the second direction. The anode lead member and the cathode lead member are arranged point-symmetrically with respect to a center of the winding portion when viewed in the first direction.
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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:US20190304704A1
公开(公告)日:2019-10-03
申请号:US16359482
申请日:2019-03-20
Inventor: YOSHIAKI ISHIMARU , KAZUNARI IMAMOTO , TATSUJI AOYAMA
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:US20180277312A1
公开(公告)日:2018-09-27
申请号:US15986455
申请日:2018-05-22
Inventor: YUICHIRO TSUBAKI , TATSUJI AOYAMA
CPC classification number: H01G11/04 , H01G9/028 , H01G9/035 , H01G9/10 , H01G9/145 , H01G9/151 , H01G11/56 , H01G11/60 , H01G11/80 , H01G11/86
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:US20180158619A1
公开(公告)日:2018-06-07
申请号:US15872948
申请日:2018-01-16
Inventor: YUICHIRO TSUBAKI , TATSUJI AOYAMA
CPC classification number: H01G9/035 , C08G61/126 , C08G2261/1424 , C08G2261/3223 , C09D165/00 , H01G9/0036 , H01G9/008 , H01G9/025 , H01G9/028 , H01G9/07 , H01G9/145 , H01G9/15 , C08L65/00 , C08L71/02 , C08K5/053 , C08K5/092
Abstract: An electrolytic capacitor includes: an anode body having a dielectric layer; a solid electrolyte layer in contact with the dielectric layer; and an electrolytic solution. The electrolytic solution contains a solvent and a solute. The solvent contains a glycol compound. The solute contains a carboxylic acid component and a base component. A ratio of the carboxylic acid component in the solute is 200 parts by mass or more with respect to 100 parts by mass of the base component.
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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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