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公开(公告)号：US10262806B2
公开(公告)日：2019-04-16
申请号：US15725344
申请日：2017-10-05
Inventor： Yasuhiro Tsuda
IPC: H01G9/04 , H01G11/48 , H01G9/028 , H01G9/035 , H01G9/055 , H01G9/022 , H01G9/07 , H01G9/15 , H01G11/56
Abstract: An electrolytic capacitor includes a capacitor element and an electrolyte solution. The capacitor element includes: an anode foil on which a dielectric layer is formed; a cathode foil which is opposite to the anode foil and on which an inorganic conductive layer is formed; and a conductive polymer layer that is interposed between the anode foil and the cathode foil, the conductive polymer layer including a conductive polymer. The cathode foil has a roughened surface on which the inorganic conductive layer is formed. And the conductive polymer layer is a layer formed with use of a dispersion or a solution containing the conductive polymer.
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公开(公告)号：US20200266004A1
公开(公告)日：2020-08-20
申请号：US16869519
申请日：2020-05-07
Inventor： Yasuhiro Tsuda
IPC: H01G9/028 , H01G9/145 , H01G9/042 , H01G9/00 , H01G11/56 , H01G11/48 , H01G9/15 , H01G9/07 , H01G9/022 , H01G9/04 , H01G9/055 , H01G9/035
Abstract: An electrolytic capacitor includes a capacitor element and an electrolyte solution. The capacitor element includes: an anode foil provided with a dielectric layer on the anode foil; a cathode foil disposed to face the anode foil; and a conductive polymer layer disposed between the anode foil and the cathode foil. The cathode foil is provided with a first layer disposed on the cathode foil, the first layer including at least one selected from the group consisting of carbon, nickel, a nickel compound, titanium, and a titanium compound. The conductive polymer layer includes a conductive polymer in contact with at least a part of a surface of the first layer. The surface of the first layer has projections and recesses.
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公开(公告)号：US10074485B2
公开(公告)日：2018-09-11
申请号：US15088272
申请日：2016-04-01
Inventor： Yasuhiro Tsuda , Junichiro Hiratsuka , Kiyoshi Furukawa
CPC classification number: H01G9/028 , H01G9/0032 , H01G9/0036 , H01G9/04 , H01G9/0425 , H01G9/15
Abstract: An electrolytic capacitor includes an anode body formed with a dielectric layer on a surface thereof, a cathode body formed with a nickel layer on a surface thereof, and a solid electrolyte formed between the anode body and the cathode body. The solid electrolyte contains a conductive polymer. The nickel layer contains a nickel crystal grain whose length in a direction perpendicular to a thickness direction of the nickel layer in a cross section taken in the thickness direction is 50 nm or more.
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公开(公告)号：US10804039B2
公开(公告)日：2020-10-13
申请号：US16106210
申请日：2018-08-21
Inventor： Miwa Ogawa , Ayumi Kochi , Yasuhiro Tsuda
IPC: C23C28/00 , C23C28/04 , H01G9/00 , H01G9/055 , H01G9/04 , H01G9/042 , C23C16/02 , C25D11/10 , C23C16/455 , C23C16/40 , C25D11/16 , H01G9/025 , H01G9/035 , H01G9/045
Abstract: An electrolytic capacitor has an electrode foil that includes a metal foil containing a first metal, a first dielectric layer disposed on the metal foil, and a second dielectric layer disposed on the first dielectric layer. A method for manufacturing the electrolytic capacitor includes subjecting a roughening treatment to the metal foil and forming the second dielectric layer on a roughened surface of the metal foil by an atomic layer deposition method. The second dielectric layer contains an oxide of a second metal. The method further includes forming the first dielectric layer containing an oxide of the first metal between the metal foil and the second dielectric layer by subjecting the metal foil to an anodization treatment.
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公开(公告)号：US10790095B2
公开(公告)日：2020-09-29
申请号：US16569889
申请日：2019-09-13
Inventor： Yasuhiro Tsuda
Abstract: An electrolytic capacitor includes a capacitor element and an electrolyte solution. The capacitor element includes an anode foil, a cathode foil that is opposite to the anode foil, and a conductive polymer layer that is disposed between the anode foil and the cathode foil. An inorganic layer including at least one selected from the group consisting of conductive carbon, titanium, and nickel is disposed on the cathode foil. The conductive polymer layer includes a conductive polymer. A proportion of water in the electrolyte solution ranges from 0.1% by mass to 6.0% by mass, inclusive.
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Patent Agency Ranking
公开(公告)号：US10755868B2
公开(公告)日：2020-08-25
申请号：US16404265
申请日：2019-05-06
Inventor： Yasuhiro Tsuda
Abstract: An electrolytic capacitor includes a capacitor element and an electrolyte solution. The capacitor element includes an anode foil, a cathode foil opposite to the anode foil, and a conductive polymer layer disposed between the anode foil and the cathode foil. A dielectric layer is formed on the anode foil. An inorganic layer is formed on the cathode foil. The conductive polymer layer includes a conductive polymer. The inorganic layer has a surface having projections and recesses. The projections form a region where the inorganic layer is in contact with the conductive polymer layer and the recesses form a region where the inorganic layer is not in contact with the conductive polymer layer. A proportion of water in the electrolyte solution ranges from 0.1% by mass to 6.0% by mass, inclusive.
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公开(公告)号：US12062501B2
公开(公告)日：2024-08-13
申请号：US17374281
申请日：2021-07-13
Inventor： Yasuhiro Tsuda
CPC classification number: H01G9/035 , H01G9/0036 , H01G9/0425 , H01G9/145 , H01G9/151 , H01G9/028 , H01G9/055
Abstract: An electrolytic capacitor includes a capacitor element and an electrolyte solution. The capacitor element includes: an anode foil on which a dielectric layer is formed; a cathode foil which is opposite to the anode foil; and a conductive polymer layer that is interposed between the anode foil and the cathode foil, conductive polymer layer including a conductive polymer. A conductive layer provided with a carbon layer including conductive carbon is formed on the cathode foil. The conductive polymer layer is a layer formed with use of a dispersion or a solution containing the conductive polymer. And a proportion of water in the electrolyte solution ranges from 0.1% by mass to 6.0% by mass, inclusive.
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公开(公告)号：US11094471B2
公开(公告)日：2021-08-17
申请号：US16909150
申请日：2020-06-23
Inventor： Yasuhiro Tsuda
Abstract: An electrolytic capacitor includes a capacitor element and a liquid. The capacitor element includes an anode foil, a cathode foil disposed to face the anode foil, and a conductive polymer layer that is disposed between the anode foil and the cathode foil. A first layer including at least one selected from the group consisting of carbon, nickel, a nickel compound, titanium, and a titanium compound is disposed on the cathode foil. The conductive polymer layer includes a conductive polymer. A proportion of water in the liquid ranges from 0.1% by mass to 6.0% by mass, inclusive.
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公开(公告)号：US10325731B2
公开(公告)日：2019-06-18
申请号：US15812407
申请日：2017-11-14
Inventor： Yasuhiro Tsuda
Abstract: An electrolytic capacitor includes a capacitor element and an electrolyte solution. The capacitor element includes an anode foil, a cathode foil opposite to the anode foil, and a conductive polymer layer interposed between the anode foil and the cathode foil. A dielectric layer is formed on the anode foil. An inorganic conductive layer is formed on the cathode foil. The conductive polymer layer includes a conductive polymer. The cathode foil has a roughened surface on which the inorganic conductive layer is formed. A proportion of water in the electrolyte solution ranges from 0.1% by mass to 6.0% by mass, inclusive.
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10.发明授权公开(公告)号：US12080490B2
公开(公告)日：2024-09-03
申请号：US17396767
申请日：2021-08-09
Inventor： Mitsuhisa Yoshimura , Naomi Kurihara , Miwa Ogawa , Yasuhiro Tsuda
Abstract: An electrode foil for an electrolytic capacitor includes a metal foil having a porous part, and a dielectric layer covering a surface of a metal framework constituting the porous part. The dielectric layer includes a first layer containing an oxide of a second metal different from a first metal contained in the metal framework. The first layer has a thickness T1. The first layer contains at least one kind of additive element selected from the group consisting of carbon, phosphorus, boron, and nitrogen. The first layer includes a first region from an outer surface of the first layer to a center of the first layer in a thickness direction, and a second region from the center to an inner surface of the first layer. A content of the at least one kind of additive element in the first region is greater than a content of the at least one kind of additive element in the second region.
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