公开(公告)号：US12218339B2

公开(公告)日：2025-02-04

申请号：US17638557

申请日：2020-06-25

Applicant: MUSASHI ENERGY SOLUTIONS CO., LTD.

Inventor： Hirobumi Suzuki ,  Kenji Kojima ,  Masaya Naoi ,  Nobuo Ando ,  Hiroki Yakushiji ,  Kazunari Aita ,  Masahiro Yamamoto

IPC: H01M4/139 ,  H01M4/02 ,  H01M4/04 ,  H01M10/058

Abstract: A doped electrode is manufactured by an electrode manufacturing method. The doped electrode includes an active material doped with an alkali metal. In the electrode manufacturing method, a dope solution is brought into contact with an electrode. The electrode includes a current collector and an active material layer. The active material layer is formed on a surface of the current collector and includes the active material. The dope solution includes an alkali metal ion and flows. In the electrode manufacturing method, for example, the alkali metal is electrically doped to the active material using a counter electrode member arranged to face the electrode.

公开(公告)号：US12095071B2

公开(公告)日：2024-09-17

申请号：US17424647

申请日：2019-11-27

Applicant: MUSASHI ENERGY SOLUTIONS CO., LTD.

Inventor： Hiroki Yakushiji ,  Masaya Naoi ,  Kenji Kojima

IPC: H01M4/04 ,  H01G11/86

CPC classification number: H01M4/0459 ,  H01G11/86

Abstract: The electrode manufacturing system comprises a cutting device. The cutting device cuts an electrode material along one direction of the electrode material to manufacture electrodes. The electrode material comprises first sections and a second section. The first section includes an active material doped with alkali metal, and extends in the one direction. The second section is located between two adjacent first sections of the first sections. In the second section, the active material doped with alkali metal is absent. The cutting device cuts the second section.

公开(公告)号：US12100547B2

公开(公告)日：2024-09-24

申请号：US16975001

申请日：2019-02-21

Applicant: Musashi Energy Solutions Co., Ltd.

Inventor： Kazunari Aita ,  Hiroki Yakushiji ,  Hirobumi Suzuki ,  Tomohiro Utaka ,  Masaya Naoi ,  Kenji Kojima

IPC: H01G11/06 ,  H01G11/50 ,  H01G11/52 ,  H01G11/66 ,  H01G11/86 ,  H01M4/02 ,  H01M4/134 ,  H01M4/36 ,  H01M4/80 ,  H01M10/0525

CPC classification number: H01G11/06 ,  H01G11/50 ,  H01G11/52 ,  H01G11/66 ,  H01G11/86 ,  H01M4/134 ,  H01M4/366 ,  H01M4/80 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027

Abstract: A power storage device includes: an electrode assembly, including a positive electrode, a separator, and a negative electrode; and an electrolyte solution. The negative electrode includes a negative electrode current collector, and a negative electrode active material layer formed on a surface of the negative electrode current collector. The negative electrode is doped with lithium. The power storage device includes first through-holes penetrating the negative electrode current collector in a thickness direction thereof. On at least one side of the negative electrode current collector, the power storage device includes second through-holes penetrating the negative electrode active material layer in a thickness direction thereof. An aperture ratio of the first through-holes on the negative electrode current collector, or an aperture ratio of the second through-holes on the negative electrode active material layer is 0.001% or higher and 1% or lower.

公开(公告)号：US11811046B2

公开(公告)日：2023-11-07

申请号：US17780346

申请日：2020-08-18

Applicant: MUSASHI ENERGY SOLUTIONS CO., LTD.

Inventor： Kazunari Aita ,  Masaya Naoi ,  Kenji Kojima ,  Masahiro Yamamoto

IPC: H01M4/139 ,  H01M4/04 ,  H01G11/06 ,  H01G11/86

CPC classification number: H01M4/0459 ,  H01G11/06 ,  H01G11/86 ,  H01M4/139

Abstract: Provided is a method for manufacturing an electrode by doping an active material included a layer of an electrode precursor with alkali metal. The electrode precursor and a counter electrode member are brought into contact with a solution containing an alkali metal ion in a dope bath. The counter electrode member includes a conductive base material, an alkali metal-containing plate, and a member having an opening. The member having the opening is located between the conductive base material and the alkali metal-containing plate. The member having the opening is, for example, a resin film having an opening.