公开(公告)号：US20240313190A1

公开(公告)日：2024-09-19

申请号：US18121345

申请日：2023-03-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xiaowei Yu ,  Ming Wang ,  Ryan Curtis Sekol ,  Diptak Bhattacharya ,  Thomas E. Moylan ,  Jennifer Therese Bracey

IPC: H01M4/04 ,  H01M4/62 ,  H01M4/66 ,  H01M4/74 ,  H01M4/75

CPC classification number: H01M4/0404 ,  H01M4/623 ,  H01M4/662 ,  H01M4/742 ,  H01M4/75

Abstract: A method for manufacturing electrodes for a battery cell includes providing a first free-standing electrode; providing a current collector including holes; providing a second free-standing electrode; and laminating the current collector between the first free-standing electrode and the second free-standing electrode using at least one of heat and pressure and without using a solvent.

公开(公告)号：US11978880B2

公开(公告)日：2024-05-07

申请号：US17335972

申请日：2021-06-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jeffrey David Cain ,  Thomas E. Moylan ,  Leng Mao ,  Paul Taichiang Yu ,  Nicholas Paul William Pieczonka ,  Andrew Clay Bobel

IPC: H01M4/04 ,  H01M4/36 ,  H01M10/0525 ,  H01M10/0562

CPC classification number: H01M4/0409 ,  H01M4/0404 ,  H01M4/366 ,  H01M10/0525 ,  H01M10/0562 ,  H01M2300/0065

Abstract: A method for forming a layered anode material includes contacting a precursor material and a first electrolyte. The precursor material is a layered ionic compound represented by MX2, where M is one of calcium and magnesium and X is one of silicon, germanium, and boron. The method further includes applying a first bias and/or current as the precursor material contacts the first electrolyte to remove cations from the precursor material to create a two-dimensional structure that defines the layered anode material. In certain variations, the method further includes contacting the two-dimensional structure and a second electrolyte and applying a second bias and/or current as the two-dimensional structure contacts the second electrolyte so as to cause lithium ions to move into interlayer spaces or voids created in the two-dimensional structure by the removal of the cations thereby forming the layered anode material.

公开(公告)号：US11769884B2

公开(公告)日：2023-09-26

申请号：US17586042

申请日：2022-01-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Anil K. Sachdev ,  Thomas E. Moylan

IPC: H01M4/74 ,  H01M4/66 ,  H01M4/04

CPC classification number: H01M4/742 ,  H01M4/0419 ,  H01M4/0435 ,  H01M4/669

Abstract: An electrode structure for a battery includes a middle layer made of an electrically conductive perforated mesh having a top surface, a bottom surface, a plurality of interconnected electrically conductive segments and a plurality of perforations among adjacent ones of the interconnected segments. A top layer of an electrode material is disposed on the top surface, and a bottom layer of the electrode material is disposed on the bottom surface, such that the top and bottom layers are disposed in physical contact with each other through the perforations in the middle layer. A method of manufacturing the electrode structure includes providing the layer of perforated mesh, applying the top and bottom layers of electrode material to the top and bottom surfaces, and curing the top and bottom layers of electrode material using one or more of heat, electromagnetic radiation and convection to produce a layer of cured electrode structure.

公开(公告)号：US20230238541A1

公开(公告)日：2023-07-27

申请号：US17586042

申请日：2022-01-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Anil K. Sachdev ,  Thomas E. Moylan

IPC: H01M4/74 ,  H01M4/04 ,  H01M4/66

CPC classification number: H01M4/742 ,  H01M4/0435 ,  H01M4/0419 ,  H01M4/669

Abstract: An electrode structure for a battery includes a middle layer made of an electrically conductive perforated mesh having a top surface, a bottom surface, a plurality of interconnected electrically conductive segments and a plurality of perforations among adjacent ones of the interconnected segments. A top layer of an electrode material is disposed on the top surface, and a bottom layer of the electrode material is disposed on the bottom surface, such that the top and bottom layers are disposed in physical contact with each other through the perforations in the middle layer. A method of manufacturing the electrode structure includes providing the layer of perforated mesh, applying the top and bottom layers of electrode material to the top and bottom surfaces, and curing the top and bottom layers of electrode material using one or more of heat, electromagnetic radiation and convection to produce a layer of cured electrode structure.

公开(公告)号：US11476463B2

公开(公告)日：2022-10-18

申请号：US16987597

申请日：2020-08-07

Applicant: GM Global Technology Operations LLC

Inventor： Jeffrey D. Cain ,  Thomas E. Moylan ,  Andrew C. Bobel ,  Lei Wang

IPC: H01M4/04 ,  H01M4/583 ,  C01B32/205 ,  H01G9/00 ,  H01M4/36

Abstract: Disclosed herein is a method comprising mixing an electroactive particle with a carbonaceous material to form a particle mixture that comprises a carbon coated particle; subjecting the carbon coated particle to a pulsed voltage between parallel plate electrodes or between rolls of a roll mill; and converting the carbon coated particle to a graphite coated particle via localized Joule heating. Disclosed herein too is an apparatus comprising a mixing device that is operative to mix an electroactive particle with a carbonaceous material to form a particle mixture that comprises a carbon coated particle; and a device for applying a pulsed voltage to the particle mixture; where the applying of the pulsed voltage is conducted when the particle mixture is located between opposing plate electrodes or between opposing rolls of a roll mill; where the device for applying the pulsed voltage converts the carbon coated particle into a graphite coated particle.