公开(公告)号：US11862406B2

公开(公告)日：2024-01-02

申请号：US17420703

申请日：2020-01-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kei Hirota ,  Kyohei Iwaoka ,  Hitoshi Fukui ,  Daisuke Usa ,  Kouta Muneyasu ,  Hiroki Nagayama

IPC: H01G9/025 ,  H01G9/012 ,  H01G9/048 ,  H01G9/00 ,  H01G9/10 ,  H01G9/15

CPC classification number: H01G9/025 ,  H01G9/0029 ,  H01G9/012 ,  H01G9/048 ,  H01G9/10 ,  H01G9/15

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.

公开(公告)号：US12283435B2

公开(公告)日：2025-04-22

申请号：US18510053

申请日：2023-11-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kei Hirota ,  Kyohei Iwaoka ,  Hitoshi Fukui ,  Daisuke Usa ,  Kouta Muneyasu ,  Hiroki Nagayama

IPC: H01G9/025 ,  H01G9/00 ,  H01G9/012 ,  H01G9/048 ,  H01G9/10 ,  H01G9/15

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.

公开(公告)号：US20250132100A1

公开(公告)日：2025-04-24

申请号：US18687013

申请日：2022-08-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Keita Uenaka ,  Kei Hirota ,  Takahiro Yoshii

IPC: H01G9/042 ,  H01G9/15

Abstract: A solid electrolytic capacitor element includes an anode body; a dielectric layer formed on a surface of the anode body; a solid electrolyte layer that covers at least a portion of the dielectric layer; and a carbon layer that covers at least a portion of the solid electrolyte layer and contains carbon particles. The carbon layer shows a D/G ratio of 1.5 or less, the D/G ratio being a ratio of an intensity of a D band relative to an intensity of a G band in a Raman spectrum of the carbon layer.

公开(公告)号：US12198868B2

公开(公告)日：2025-01-14

申请号：US18004424

申请日：2021-07-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Keita Uenaka ,  Kei Hirota ,  Yuta Tomimatsu

IPC: H01G9/042 ,  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.

公开(公告)号：US12154726B2

公开(公告)日：2024-11-26

申请号：US18006362

申请日：2021-08-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuma Imanishi ,  Kei Hirota

IPC: H01G9/025 ,  H01G9/048 ,  H01G9/15 ,  H01G9/26

Abstract: A solid electrolytic capacitor element includes an anode body including a porous part, a dielectric layer, and a cathode part. The cathode part includes a solid electrolyte layer covering the dielectric layer. The anode body includes a first anode body part on which the solid electrolyte layer is disposed and a second anode body part on which the solid electrolyte layer is not disposed. The solid electrolyte layer includes a first solid electrolyte layer disposed in the porous part and a second solid electrolyte layer disposed outside the porous part. When a length of the first anode body part in a longitudinal direction thereof is defined as a length L, a thickness of the second solid electrolyte layer in a first region is more than or equal to 1 μm. The first region is a region between boundary between the first anode body part and the second anode body part and a position located away from boundary in a length 0.05 L in the first anode body part.

公开(公告)号：US11915884B2

公开(公告)日：2024-02-27

申请号：US17597671

申请日：2020-07-31

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kei Hirota ,  Keita Uenaka ,  Yukihiro Shimasaki ,  Hiroki Imamura

IPC: H01G9/042 ,  H01G9/15

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.

公开(公告)号：US12205773B2

公开(公告)日：2025-01-21

申请号：US17904841

申请日：2021-03-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Keita Uenaka ,  Kei Hirota ,  Hideki Shimamoto ,  Nao Matsumura

IPC: H01G9/028 ,  H01G9/012 ,  H01G9/15

Abstract: An electrolytic capacitor includes a capacitor element. The 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 first layer covering at least a part of the solid electrolyte layer. The first layer is in contact with the solid electrolyte layer. The first layer constitutes at least a part of the cathode lead-out layer. An electrode potential Ps of the solid electrolyte layer is higher than an electrode potential P1 of the first layer.

公开(公告)号：US12087514B2

公开(公告)日：2024-09-10

申请号：US17760001

申请日：2021-02-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kei Hirota ,  Keita Uenaka

IPC: H01G9/042 ,  H01G9/048 ,  H01G9/15

CPC classification number: H01G9/0425 ,  H01G9/048 ,  H01G9/15

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.