公开(公告)号：US20220399170A1

公开(公告)日：2022-12-15

申请号：US17892958

申请日：2022-08-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUICHIRO TSUBAKI ,  Kazuyo Saito ,  Tatsuji Aoyama

IPC: H01G9/035 ,  H01G9/145 ,  H01G9/15

Abstract: An electrolytic capacitor includes an anode body, a cathode body, and a conductive polymer and a liquid component that are disposed between the anode body and the cathode body. The liquid component contains an acid component, a base component, and an aromatic additive. The acid component includes at least one of an aromatic carboxylic acid and an aromatic carboxylic acid derivative. The at least one of the aromatic carboxylic acid and the aromatic carboxylic acid derivative includes at least two carboxy groups and at least one aromatic ring. A content proportion of the base component in the liquid component is more than or equal to 1% by mass. The aromatic additive includes an electron withdrawing group and an electron donating group. A content ratio of the aromatic additive contained in the liquid component is more than or equal to 50 parts by mass with respect to 100 parts by mass of the conductive polymer.

公开(公告)号：US11302486B2

公开(公告)日：2022-04-12

申请号：US16833951

申请日：2020-03-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuichiro Tsubaki ,  Tatsuji Aoyama ,  Kazuyo Saito ,  Yuji Otsuka

IPC: H01G9/035 ,  H01G9/028 ,  H01G9/048

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.

公开(公告)号：US11244792B2

公开(公告)日：2022-02-08

申请号：US16889314

申请日：2020-06-01

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuichiro Tsubaki ,  Kazuyo Saito

IPC: H01G11/60 ,  H01G11/48 ,  H01G9/07 ,  H01G11/24

Abstract: An electrolytic capacitor includes an anode body, a dielectric layer disposed on a surface of the anode body, a solid electrolyte layer that is in contact with the dielectric layer, and an ion conductor that is liquid at room temperature. The solid electrolyte layer includes a conductive polymer. The ion conductor includes a solvent, an acid component, and a base component. The content proportion of the solvent in the ion conductor is more than 10% by mass and less than or equal to 60% by mass. The total content proportion of the acid component and the base component in the ion conductor is more than or equal to 40% by mass and less than 90% by mass. A melting point of the ion conductor is lower than or equal to −10° C.

公开(公告)号：US10563318B2

公开(公告)日：2020-02-18

申请号：US15724303

申请日：2017-10-04

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuichiro Tsubaki ,  Tatsuji Aoyama ,  Kazuyo Saito

IPC: C25D11/12 ,  H01G9/022 ,  C25D11/08 ,  H01G9/00 ,  H01G9/028 ,  H01G9/032 ,  H01G9/035 ,  H01G9/04 ,  H01G9/055 ,  H01G9/07 ,  H01G9/15

Abstract: An electrolytic capacitor includes an anode body having a dielectric layer; a solid electrolyte layer in contact with the dielectric layer of the anode body; and an electrolyte solution. The solid electrolyte layer includes a π-conjugated conductive polymer. The electrolyte solution contains a solvent and a solute, and the solvent contains a glycol compound and a sulfone compound. A proportion of the glycol compound contained in the solvent is 10% by mass or more. A proportion of the sulfone compound contained in the solvent is 30% by mass or more. A total proportion of the glycol compound and the sulfone compound contained in the solvent is 70% by mass or more.

公开(公告)号：US12148579B2

公开(公告)日：2024-11-19

申请号：US18360528

申请日：2023-07-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuichiro Tsubaki ,  Tatsuji Aoyama ,  Kazuyo Saito ,  Yuji Otsuka

IPC: H01G9/035 ,  H01G9/028 ,  H01G9/048

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.

公开(公告)号：US11804334B2

公开(公告)日：2023-10-31

申请号：US17892958

申请日：2022-08-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuichiro Tsubaki ,  Kazuyo Saito ,  Tatsuji Aoyama

IPC: H01G9/035 ,  H01G9/145 ,  H01G9/028 ,  H01G9/15

CPC classification number: H01G9/035 ,  H01G9/145 ,  H01G9/151

Abstract: An electrolytic capacitor includes an anode body, a cathode body, and a conductive polymer and a liquid component that are disposed between the anode body and the cathode body. The liquid component contains an acid component, a base component, and an aromatic additive. The acid component includes at least one of an aromatic carboxylic acid and an aromatic carboxylic acid derivative. The at least one of the aromatic carboxylic acid and the aromatic carboxylic acid derivative includes at least two carboxy groups and at least one aromatic ring. A content proportion of the base component in the liquid component is more than or equal to 1% by mass. The aromatic additive includes an electron withdrawing group and an electron donating group. A content ratio of the aromatic additive contained in the liquid component is more than or equal to 50 parts by mass with respect to 100 parts by mass of the conductive polymer.

公开(公告)号：US11715605B2

公开(公告)日：2023-08-01

申请号：US17518849

申请日：2021-11-04

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuyo Saito ,  Yuichiro Tsubaki ,  Tatsuji Aoyama

IPC: H01G9/035 ,  H01G9/028 ,  H01G9/145 ,  H01G9/15 ,  H01G9/042

CPC classification number: H01G9/035 ,  H01G9/028 ,  H01G9/145 ,  H01G9/151 ,  H01G9/042

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.