公开(公告)号：US12131872B2

公开(公告)日：2024-10-29

申请号：US17756542

申请日：2020-12-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Naoki Umahashi ,  Masatoshi Takeshita ,  Hitoshi Fukui ,  Makoto Nagashima

IPC: H01G9/02 ,  H01G9/028 ,  H01G9/15

CPC classification number: H01G9/028 ,  H01G9/15

Abstract: An electrolytic capacitor includes at least one capacitor element. The at least one capacitor element includes: an anode body including an anode lead portion, and a cathode forming portion; a dielectric layer disposed on at least a surface of the cathode forming portion 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 that contains a conductive polymer, and covers at least a part of the dielectric layer. A ratio T1/T2 of a thickness T1 of the solid electrolyte layer formed at a corner portion of the anode body to a thickness T2 of the solid electrolyte layer formed at a center portion of a principal surface of the anode body is in a range from 0.8 to 1.7, inclusive, in a cross section of the at least one capacitor element.

公开(公告)号：US11315739B2

公开(公告)日：2022-04-26

申请号：US15733095

申请日：2018-12-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hitoshi Fukui ,  Ai Makino ,  Hiroshi Kojima

IPC: H01G9/028 ,  H01G9/00 ,  H01G9/07 ,  H01G9/15

Abstract: An electrolytic capacitor includes an anode body, a dielectric layer disposed on a surface of the anode body, and a solid electrolyte layer disposed on a surface of the dielectric layer. The solid electrolyte layer includes a conductive polymer and a first compound. The first compound has a naphthalene skeleton, and includes at least one COOM1 group and at least one sulfonate group. The at least one sulfonate group is bonded to the naphthalene skeleton. The at least one COOM1 group is bonded to the naphthalene skeleton, where M1 is a hydrogen atom, a metal atom, or an onium group.

公开(公告)号：US11152158B2

公开(公告)日：2021-10-19

申请号：US16430216

申请日：2019-06-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hitoshi Fukui ,  Hiroshi Kojima

IPC: H01G9/028 ,  H01G9/15 ,  H01G9/00

Abstract: An electrolytic capacitor includes an anode body, a dielectric layer disposed on the anode body, and a solid electrolyte layer disposed on the dielectric layer. The solid electrolyte layer includes a conductive polymer, a polyanion, and an alkali component. The alkali component includes two or more kinds of alkali compound.