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公开(公告)号：US20250095924A1
公开(公告)日：2025-03-20
申请号：US18967672
申请日：2024-12-04
Inventor： TAKAHIRO YOSHII , KEI HIROTA , YOSHIHARU KATAOKA
Abstract: A capacitor element includes an anode body including a first portion including a first end and a second portion including a second end, and a separation part disposed on a part positioned between the first end and the second end of the anode body. The conductive polymer layer includes an inner layer filled in at least a part of the porous part, and an outer layer positioned outside a principal surface of the anode body. The separation part includes an end A and an end B, the end B being positioned closer to the second end than the end A is. A filling proportion in a region C included in a cross section of a portion of the porous part from the end B to 0.05L is more than or equal to 46%, where L represents a length from the end B to an end of the cathode part at the second end side.
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公开(公告)号：US20220102081A1
公开(公告)日：2022-03-31
申请号：US17420703
申请日：2020-01-23
Inventor： KEI HIROTA , KYOHEI IWAOKA , HITOSHI FUKUI , DAISUKE USA , KOUTA MUNEYASU , HIROKI NAGAYAMA
Abstract: A solid electrolytic capacitor includes a capacitor element. The capacitor element includes an anode foil including a base material part and a porous part disposed on a surface of the base material part, a dielectric layer disposed on at least a part of a surface of the anode foil, a solid electrolyte layer covering at least a part of the dielectric layer, and a cathode lead-out layer covering at least a part of the solid electrolyte layer. The anode foil includes an anode section on which the solid electrolyte layer is not disposed, a cathode formation section on which the solid electrolyte layer is disposed, and a separation section located between the anode section and the cathode formation section. A first insulating material is disposed on a surface of the porous part in the separation section. And at least a part of a region of the porous part that is covered with the first insulating material includes a second insulating material.
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公开(公告)号：US20230282425A1
公开(公告)日：2023-09-07
申请号：US18004424
申请日：2021-07-08
Inventor： KEITA UENAKA , KEI HIROTA , YUTA TOMIMATSU
CPC classification number: H01G9/0425 , H01G9/15
Abstract: A solid electrolytic capacitor element includes an anode body, a dielectric layer disposed on a surface of the anode body, a solid electrolyte layer covering at least a part of the dielectric layer, and a cathode lead-out layer covering at least a part of the solid electrolyte layer. The cathode lead-out layer includes a carbon layer that is in contact with the solid electrolyte layer and covers the at least the part of the solid electrolyte layer. The carbon layer includes a carbonaceous material and a transition metal ion component. A content proportion of the transition metal ion component in the carbon layer is 17000 ppm or less on a mass basis.
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公开(公告)号：US20230074619A1
公开(公告)日：2023-03-09
申请号：US17760001
申请日：2021-02-17
Inventor： KEI HIROTA , KEITA UENAKA
Abstract: An electrolytic capacitor including a capacitor element. The capacitor element includes an anode body, a dielectric layer covering at least a part of the anode body, a solid electrolyte layer covering at least a part of the dielectric layer, and a cathode lead-out layer covering at least a part of the solid electrolyte layer. The cathode lead-out layer includes a conductive layer. An oxygen permeability of the conductive layer at a thickness of 10 μm is less than or equal to 7 cc/m2·day·atm.
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公开(公告)号：US20240212945A1
公开(公告)日：2024-06-27
申请号：US18421859
申请日：2024-01-24
Inventor： KEI HIROTA , KEITA UENAKA , YUKIHIRO SHIMASAKI , HIROKI IMAMURA
CPC classification number: H01G9/0425 , H01G9/15
Abstract: An electrolytic capacitor includes a capacitor element. The capacitor element includes an anode body, a dielectric layer that covers at least a part of the anode body, a solid electrolyte layer that covers at least a part of the dielectric layer, and a cathode lead-out layer that covers a part of the solid electrolyte layer. The cathode lead-out layer contains a carbon material and a first polymer including an acid group. The acid group includes at least one selected from the group consisting of a sulfone group, a carboxyl group, and a derivative of the sulfone group or the carboxyl group.
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Patent Agency Ranking
公开(公告)号：US20230360859A1
公开(公告)日：2023-11-09
申请号：US18245301
申请日：2021-10-21
Inventor： TAKAHIRO YOSHII , KEI HIROTA , HIROMI OZAWA
Abstract: An anode body, a dielectric layer disposed on a surface of the anode body, and a cathode part covering at least a part of the dielectric layer are provided. The cathode part includes a solid electrolyte layer covering the at least the part of the dielectric layer and containing a conjugated polymer. A solid electrolytic capacitor having excellent heat resistance is provided by using a solid electrolytic capacitor element where a full width at half maximum of a first peak is in a range from 35 cm−1 to 80 cm−1 inclusive when the first peak attributed to a CC stretching vibration derived from the conjugated polymer is fitted with a Lorentz function in a Raman spectrum of the solid electrolyte layer.
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公开(公告)号：US20220277901A1
公开(公告)日：2022-09-01
申请号：US17597671
申请日：2020-07-31
Inventor： KEI HIROTA , KEITA UENAKA , YUKIHIRO SHIMASAKI , HIROKI IMAMURA
Abstract: An electrolytic capacitor includes a capacitor element. The capacitor element includes an anode body, a dielectric layer that covers at least a part of the anode body, a solid electrolyte layer that covers at least a part of the dielectric layer, and a cathode lead-out layer that covers a part of the solid electrolyte layer. The cathode lead-out layer contains a carbon material and a first polymer including an acid group. The acid group includes at least one selected from the group consisting of a sulfone group, a carboxyl group, and a derivative of the sulfone group or the carboxyl group.
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公开(公告)号：US20240412926A1
公开(公告)日：2024-12-12
申请号：US18699305
申请日：2022-09-15
Inventor： TAKAHIRO YOSHII , KEI HIROTA , HIROMI OZAWA
Abstract: A solid electrolytic capacitor includes a solid electrolytic capacitor element and an exterior body that seals the solid electrolytic capacitor element. The solid electrolytic capacitor element includes an anode body including a first end part and a second end part that is disposed opposite to the first end part, a dielectric layer covering at least a part of the anode body, and a cathode part covering at least a part of the dielectric layer. The at least a part of the dielectric layer is disposed on a portion of the anode body that is closer to the second end part than to the first end part. The cathode part includes a solid electrolyte layer covering the at least a part of the dielectric layer. A breaking strength of the solid electrolyte layer is 0.55 MPa or more and 45.00 MPa or less.
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公开(公告)号：US20240055191A1
公开(公告)日：2024-02-15
申请号：US18258296
申请日：2022-01-12
Inventor： KEI HIROTA , TAKAHIRO YOSHII
CPC classification number: H01G9/028 , H01G9/15 , H01G9/0036
Abstract: A solid electrolytic capacitor element includes an anode body, a dielectric layer formed on a surface of the anode body, and a cathode part covering at least a part of the dielectric layer. The cathode part includes a solid electrolyte layer covering the at least the part of the dielectric layer. The solid electrolyte layer includes a conductive polymer component containing a conjugated polymer. An oxygen permeability P1 of the solid electrolyte layer after heating at 230° C. for 5 hours is less than or equal to 1.0 cm3/m2·24 h·atm.
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10.发明公开公开(公告)号：US20230268136A1
公开(公告)日：2023-08-24
申请号：US18001672
申请日：2021-07-02
Inventor： TOMOKI SUGIMOTO , KEI HIROTA
CPC classification number: H01G9/048 , H01G9/15 , H01G9/0032 , H01G9/0036
Abstract: A solid electrolytic capacitor element includes an anode foil that includes a porous part in a surface layer of the anode foil, a dielectric layer,and a cathode part. The cathode part includes a solid electrolyte layer that covers the at least a part of the dielectric layer and a cathode lead-out layer that covers at least a part of the solid electrolyte layer. The anode foil includes a first part that is a cathode forming part where the solid electrolyte layer is formed and a second part where the solid electrolyte layer is not formed. And the anode foil includes a dense part in the surface layer in at least one of the first part and the second part. The dense part has a porosity smaller than a porosity of the porous part. The second part includes at least an anode part including an end part of the anode foil opposite to the first part.
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