公开(公告)号：US11348739B2

公开(公告)日：2022-05-31

申请号：US17121693

申请日：2020-12-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yasuhiro Tsuda

IPC: H01G9/055 ,  H01G9/04 ,  H01G9/028 ,  H01G9/035 ,  H01G9/00 ,  H01G9/042 ,  H01G9/145 ,  H01G9/022 ,  H01G9/07 ,  H01G9/15 ,  H01G11/48 ,  H01G11/56

Abstract: An electrolytic capacitor includes a capacitor element and a solution containing a solute. 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 cathode foil has a roughened surface, and the roughened surface of the cathode foil has a surface expansion rate ranging from 1.5 cm2/cm2 to 500 cm2/cm2, inclusive.

公开(公告)号：US10896783B2

公开(公告)日：2021-01-19

申请号：US16869519

申请日：2020-05-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yasuhiro Tsuda

IPC: H01G9/04 ,  H01G11/48 ,  H01G9/028 ,  H01G9/035 ,  H01G9/055 ,  H01G9/00 ,  H01G9/042 ,  H01G9/145 ,  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 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.

公开(公告)号：US10790098B2

公开(公告)日：2020-09-29

申请号：US16404265

申请日：2019-05-06

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yasuhiro Tsuda

IPC: H01G9/055 ,  H01G11/26 ,  H01G11/52 ,  H01G9/028 ,  H01G9/035 ,  H01G9/04 ,  H01G11/62 ,  H01G11/86

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.

公开(公告)号：US10720284B2

公开(公告)日：2020-07-21

申请号：US16404265

申请日：2019-05-06

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yasuhiro Tsuda

IPC: H01G9/055 ,  H01G11/26 ,  H01G11/52 ,  H01G9/028 ,  H01G9/035 ,  H01G9/04 ,  H01G11/62 ,  H01G11/86

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.

公开(公告)号：US10685788B2

公开(公告)日：2020-06-16

申请号：US16287618

申请日：2019-02-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yasuhiro Tsuda

IPC: H01G9/055 ,  H01G9/04 ,  H01G9/028 ,  H01G9/035 ,  H01G9/00 ,  H01G9/042 ,  H01G9/145 ,  H01G9/022 ,  H01G9/07 ,  H01G9/15 ,  H01G11/48 ,  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 on which an inorganic conductive layer is formed; and a conductive polymer layer disposed between the anode foil and the cathode foil. The inorganic layer has a surface having projections and recesses.

公开(公告)号：US10453618B2

公开(公告)日：2019-10-22

申请号：US15725353

申请日：2017-10-05

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yasuhiro Tsuda

IPC: H01G9/035 ,  H01G9/15 ,  H01G9/042 ,  H01G9/00 ,  H01G9/145 ,  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.