公开(公告)号：US20240371575A1

公开(公告)日：2024-11-07

申请号：US18292788

申请日：2022-07-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Mitsuhisa YOSHIMURA ,  Toshifumi KADOKAWA ,  Masami TSUBAKI ,  Yuji OTSUKA

IPC: H01G9/055

Abstract: An electrode foil for an electrolytic capacitor includes a metal foil that includes a porous portion and a core portion continuous to the porous portion. The metal foil has a main surface in which pores in the porous portion are open. The porous portion includes a plurality of recessed portions that are open in the main surface and distributed in a dot pattern in an in-plane direction of the metal foil. The pores in the porous portion have an opening diameter smaller than 2 μm, recessed portions that are adjacent to each other have an opening diameter D1 μm and an opening diameter D2 μm, respectively, and are spaced apart from each other by a distance L μm, and the opening diameter D1 and the distance L satisfy 2≤D1 and 2≤L/D1≤50. The opening diameter D2 and the distance L satisfy 2≤D2 and 2≤L/D2≤50.

公开(公告)号：US20240282533A1

公开(公告)日：2024-08-22

申请号：US18292224

申请日：2022-07-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Toshifumi KADOKAWA ,  Mitsuhisa YOSHIMURA ,  Masami TSUBAKI ,  Shumpei MATSUSHITA

IPC: H01G9/048 ,  H01G9/00 ,  H01G9/042

CPC classification number: H01G9/048 ,  H01G9/0029 ,  H01G9/042

Abstract: An electrode foil for an electrolytic capacitor contains a valve metal, and includes a core portion, and a porous portion continuous with the core portion. The porous portion has a thickness T μm, and includes an inner layer region located on the core portion side, and a surface layer region located opposite to the core portion. The surface layer region is a region within a distance T/4 from an outer surface of the porous portion, and the inner layer region is a region within a distance T/4 from a boundary of the porous portion with the core portion. An average size D1 nm of pores in the surface layer region is smaller than an average size D2 nm of pores in the inner layer region.

公开(公告)号：US20250149256A1

公开(公告)日：2025-05-08

申请号：US19018830

申请日：2025-01-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Mitsuhisa YOSHIMURA ,  Toshifumi KADOKAWA ,  Masami TSUBAKI

IPC: H01G9/055 ,  H01G9/045

Abstract: A method for producing an electrode foil for electrolytic capacitor use includes: preparing a raw material foil; and etching the raw material foil. The raw material foil contains a valve metal, and has a plurality of recesses that open on a main surface thereof and that are arranged to be distributed in a dot-like manner in the direction of the main surface. The opening diameter of the recesses is 2 μm or more.

公开(公告)号：US20240304396A1

公开(公告)日：2024-09-12

申请号：US18263093

申请日：2022-01-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Mitsuhisa YOSHIMURA ,  Toshifumi KADOKAWA ,  Masami TSUBAKI ,  Yuji OTSUKA

IPC: H01G9/055 ,  H01G9/145 ,  H01G9/15

CPC classification number: H01G9/055 ,  H01G9/145 ,  H01G9/151

Abstract: An electrode foil for an electrolytic capacitor includes a metal foil that includes a porous portion and a core portion continuous to the porous portion. The metal foil has a main surface in which pores in the porous portion are open. The porous portion includes a plurality of recessed portions that are open in the main surface and distributed in a dot pattern in an in-plane direction of the metal foil. The pores in the porous portion have an opening length smaller than 2 μm, and the recessed portions have an opening length of 2 μm or more.

公开(公告)号：US20230335341A1

公开(公告)日：2023-10-19

申请号：US18042435

申请日：2021-08-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Mitsuhisa YOSHIMURA ,  Masami TSUBAKI ,  Naomi KURIHARA ,  Miwa OGAWA

IPC: H01G9/055 ,  H01G9/00

CPC classification number: H01G9/055 ,  H01G9/0029 ,  H01G9/045

Abstract: An electrode foil for an electrolytic capacitor includes an anode body having a porous portion and a core part continuous with the porous portion, a dielectric layer covering a surface of a metal skeleton forming the porous portion, wherein an interface layer including a first element is present between the metal skeleton and the dielectric layer, and the first element is at least one selected from the group consisting of sulfur, nitrogen, and phosphorus.

公开(公告)号：US20220148815A1

公开(公告)日：2022-05-12

申请号：US17434263

申请日：2019-10-30

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Mitsuhisa YOSHIMURA ,  Shosuke NAKANO ,  Hiroshi YOSHIDA ,  Masami TSUBAKI ,  Naomi KURIHARA ,  Miwa OGAWA

IPC: H01G9/055 ,  H01G9/00

Abstract: An electrode foil for an electrolytic capacitor including a metal porous portion, and a metal core portion continuous to the metal porous portion. When the metal porous portion is equally divided in three in a thickness direction of the metal porous portion into a first region, a second region, and a third region sequentially from the metal core portion side, the first region has a porosity P1, the second region has a porosity P2, and the third region has a porosity P3, satisfying P1