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公开(公告)号：US20230050288A1
公开(公告)日：2023-02-16
申请号：US17783125
申请日：2020-12-08
Inventor： Yuichiro TSUBAKI , Tatsuji AOYAMA , Kazuyo SAITO , Liyi CHEN , Kengo UCHIHASHI
Abstract: 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：US20180240600A1
公开(公告)日：2018-08-23
申请号：US15954179
申请日：2018-04-16
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 includes: 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 are an aprotic solvent.
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公开(公告)号：US20250022664A1
公开(公告)日：2025-01-16
申请号：US18712152
申请日：2022-11-29
Inventor： Tatsuji AOYAMA , Shumpei MATSUSHITA , Tomoyuki TASHIRO
Abstract: An electrode foil for an electrolytic capacitor includes a metal foil having a first region and a second region other than the first region, in which the second region is a region extending linearly along an edge portion of the metal foil, the thickness of the second region is smaller than the thickness of the first region, and steps are provided between the first region and the second region on both surfaces of the metal foil.
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公开(公告)号：US20230377807A1
公开(公告)日：2023-11-23
申请号：US18360528
申请日：2023-07-27
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：US20210343482A1
公开(公告)日：2021-11-04
申请号：US17261819
申请日：2019-07-26
Inventor： Yuichiro TSUBAKI , Junya KUSHIZAKI , Tatsuji AOYAMA
IPC: H01G9/15
Abstract: An electrolytic capacitor according to the present disclosure includes an anode body, a cathode body, a solid electrolyte, and a liquid component. The anode body has a surface on which a dielectric layer is to be formed. The solid electrolyte is in contact with the dielectric layer and is disposed between the anode body and the cathode body. The liquid component is in contact with the dielectric layer and the solid electrolyte and contains a solvent and an acid component. The acid component includes a composite acid compound of an inorganic acid and an organic acid. The solvent contains a polyol including two or more hydroxyl groups and a polyalkylene glycol having three or more carbon atoms per repeating unit.
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Patent Agency Ranking
公开(公告)号：US20250095923A1
公开(公告)日：2025-03-20
申请号：US18832547
申请日：2023-01-27
Inventor： Tatsuji AOYAMA , Shumpei MATSUSHITA , Tomoyuki TASHIRO
Abstract: A disclosed electrolytic capacitor includes a stacked body and a liquid component with which the stacked body is impregnated. The stacked body includes an anode foil having a dielectric layer formed on a surface thereof, a cathode foil, a separator, and conductive polymer layers. The conductive polymer layers include a first conductive polymer layer formed on the dielectric layer, a second conductive polymer layer formed on the cathode foil, and a third conductive polymer layer formed on the separator. The first conductive polymer layer and the third conductive polymer layer are in contact with each other at a first interface, and the second conductive polymer layer and the third conductive polymer layer are in contact with each other at a second interface. When the amount of the liquid component contained in the stacked body has decreased, an electrical resistance between the first conductive polymer layer and the third conductive polymer layer and an electrical resistance between the second conductive polymer layer and the third conductive polymer layer increase.
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公开(公告)号：US20250062077A1
公开(公告)日：2025-02-20
申请号：US18721554
申请日：2022-12-23
Inventor： Yasuhiro NISHIMURA , Honami SERIZAWA , Miyoko MASUDA , Tatsuji AOYAMA
Abstract: A disclosed manufacturing method includes a laminated body formation step of forming a laminated body by laminating an anode foil, a cathode foil, and a separator such that the separator is arranged between the anode foil and the cathode foil, and a polymer layer formation step of impregnating the laminated body with a dispersion liquid containing a conductive polymer and a dispersion medium, and then evaporating at least a portion of the dispersion medium of the dispersion liquid in the laminated body to form a conductive polymer layer containing the conductive polymer in the laminated body. The laminated body formation step further includes a step of surrounding an outer periphery of the laminated body with a binding member. The separator has a protrusion part that protrudes from the binding member. In the polymer layer formation step, the laminated body is impregnated with the dispersion liquid from the protrusion part.
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公开(公告)号：US20220262577A1
公开(公告)日：2022-08-18
申请号：US17661709
申请日：2022-05-02
Inventor： Mitsuhisa YOSHIMURA , Miwa OGAWA , Natsuyo SASADA , Tatsuji AOYAMA
Abstract: A cathode foil for electrolytic capacitors includes a metal porous part, a metal core part that is continuous with the metal porous part, and a coating film covering the metal porous part. Pores in the metal porous part are open at a first main surface of the cathode foil. The coating film is disposed in a region from the first main surface to a depth more than or equal to 10% of a thickness of the metal porous part in a thickness direction of the metal porous part.
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公开(公告)号：US20220059292A1
公开(公告)日：2022-02-24
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：US20210313119A1
公开(公告)日：2021-10-07
申请号：US17348417
申请日：2021-06-15
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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