公开(公告)号：US20220109136A1

公开(公告)日：2022-04-07

申请号：US17060606

申请日：2020-10-01

Applicant: GM Global Technology Operations LLC

Inventor： Nicole Ellison ,  Xiaosong Huang ,  Mark W. Verbrugge

IPC: H01M4/04 ,  H01M4/62 ,  H01M4/66

Abstract: Disclosed herein is a method comprising disposing a slurry comprising an organic binder, an optional conductive filler, an optional solvent and an active material on a current collector; wherein the active material comprises a labile metal ion; removing the optional solvent to form a dry electrode; firing the dry electrode at a temperature of at least 200° C.; and carbonizing the organic binder to form a carbonized layer.

公开(公告)号：US20220062752A1

公开(公告)日：2022-03-03

申请号：US17008758

申请日：2020-09-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Wei ZENG ,  Jeremie Dernotte ,  Ke Liu ,  Nicole Ellison ,  Syed B. Mehdi ,  Kevin J. Silang ,  Louis G. Hector, JR.

IPC: A63F13/213 ,  G06K9/00 ,  G06F3/01

Abstract: An environment interactive system includes: a first camera capturing first images of an area external to the vehicle; a second camera capturing second images of an area interior to the vehicle; a telematics control module determining a geographical location of the vehicle; a viewing device displaying items adjacent to, on or in front of detected objects and in a FOV of an occupant. The items correspond to the detected objects; and an infotainment module. The infotainment module: detects the objects based on the first images and the location of the vehicle; based on the second images, tracks at least one of a location of an eye of the occupant or a location of a body part of the occupant other than the eye; and based on the location of the eye and the location of the body part, displays the items via the viewing device in the FOV.

公开(公告)号：US20210151765A1

公开(公告)日：2021-05-20

申请号：US16686659

申请日：2019-11-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Nicole Ellison ,  Xiaosong Huang

IPC: H01M4/62 ,  H01M4/38 ,  H01M10/0525 ,  H01M4/64

Abstract: A method of forming an electrode for a lithium-ion electrochemical cell includes mixing together a conductive filler component, an active material component, and a binder solution that includes a binder component and a solvent to form a slurry; casting the slurry onto a current collector to form a wet workpiece; and submersing the wet workpiece in a bath that includes a non-solvent to induce a phase inversion and form a wet electrode composition. Submersing and inducing the phase inversion includes forming a liquid-like polymer lean phase and a solid-like polymer rich phase in the wet electrode composition as the non-solvent enters the slurry. The method includes drying the wet electrode composition to form an electrode composition disposed on the current collector and thereby form the electrode.

公开(公告)号：US20210151764A1

公开(公告)日：2021-05-20

申请号：US16686398

申请日：2019-11-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Nicole Ellison ,  Xiaosong Huang

IPC: H01M4/62 ,  H01M4/64 ,  H01M4/38 ,  H01M10/0525

Abstract: An electrode for a lithium-ion electrochemical cell includes a current collector and an electrode composition disposed on the current collector. The electrode composition includes a binder component, a conductive filler component disposed within the binder component, and an active material component dispersed within the binder component and the conductive filler component. The electrode composition has a first surface and a second surface spaced apart from and parallel to the first surface. The electrode composition defines: a plurality of channels each extending between the first surface and the second surface in a first direction that is generally perpendicular to the first surface and each configured for lithium-ion transport between the first surface and the second surface; and a plurality of pores between the first surface and the second surface and adjacent to the plurality of channels.

公开(公告)号：US20250140776A1

公开(公告)日：2025-05-01

申请号：US18497358

申请日：2023-10-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Daniel RYAN ,  Nicole Ellison ,  Shaomao Xu

IPC: H01M4/04 ,  B05C5/02 ,  B05C9/04 ,  B05C11/11 ,  B05C13/00 ,  B22D1/00 ,  B22D19/00 ,  C23C26/02 ,  H01M4/38

Abstract: A method of manufacturing an alkali metal coated current collector for a battery, the method includes melting the alkali metal, removing impurities floating on the surface of the melted alkali metal; applying the purified melted alkali metal to the surface of at least one side of a passing current collector substrate to form a coating on the current collector substrate. A system for manufacturing an alkali metal coated current collector for a battery includes at least one extruder having a melt chamber, an inlet extending to the melt chamber, at least one feed roller in the inlet for feeding alkali metal introduced into the inlet to the melt chamber; a heater for melting alkali metal in the melt chamber; an opening in the chamber for removing impurities floating on the melted alkali metal in the melt chamber; an outlet extending from the melt chamber to a dispensing opening; a reservoir for receiving melted alkali metal; and at least one drive roller for driving a current collector substrate past the reservoir to receive a coating of melted alkali metal.

公开(公告)号：US20250096225A1

公开(公告)日：2025-03-20

申请号：US18469720

申请日：2023-09-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Nicole Ellison ,  Joel G. Toner ,  Xiaosong Huang ,  Daniel Ryan

IPC: H01M4/04

Abstract: Aspects of the disclosure include an electrode calendering system for manufacturing electrodes with enhanced edge quality. An exemplary system includes an active material supply including an electrode material and a coating roll coupled to the active material supply. The coating roll is positioned to coat a current collector with the electrode material. A back roll is positioned to transfer the current collector to the coating roll. The system includes at least one of a bare foil supporting material roll and a coated foil supporting material roll. The bare foil supporting material roll is positioned to apply a support material onto a first portion of the current collector prior to the current collector being coated with the electrode material. The coated foil supporting material roll is positioned to apply the support material onto the first portion of the current collector after the current collector is coated with the electrode material.

公开(公告)号：US20250062337A1

公开(公告)日：2025-02-20

申请号：US18451163

申请日：2023-08-17

Applicant: GM Global Technology Operations LLC

Inventor： Colin Jamison ,  Jiazhu Hu ,  Bradley R. Frieberg ,  Roland J. Koestner ,  Nicole Ellison ,  Yuntao Gu

IPC: H01M4/525 ,  H01M4/04 ,  H01M4/505 ,  H01M4/62 ,  H01M10/0525

Abstract: A cathode for use in a lithium ion battery includes an active material present in an amount of from 70 to 99 weight percent, wherein the active material includes a lithium rich nickel manganese oxide; a conductive network of a mixture of conductive elements present in an amount of from 0.25 to 20 weight percent, wherein the mixture of conductive elements includes two or more of low aspect ratio particles, plate-like particles, and needle-like particles; and a binder system present in an amount of from 0.25 to 10 weight percent, wherein the binder system includes a primary binder polymer and an acid group or a salt thereof, wherein the amounts are based on a total weight of the cathode.

公开(公告)号：US11824186B2

公开(公告)日：2023-11-21

申请号：US17221099

申请日：2021-04-02

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Bradley R. Frieberg ,  Nicole Ellison ,  Xiaosong Huang ,  Zhongyi Liu

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/134 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/364 ,  H01M4/0416 ,  H01M4/134 ,  H01M4/622 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/027

Abstract: In a method of making a negative electrode for an electrochemical cell of a secondary lithium battery, a precursor mixture is prepared that includes electrochemically active Li—Si alloy particles, electrically conductive carbon particles, and an inert polymer binder dissolved in a nonpolar organic solvent.

公开(公告)号：US11735724B2

公开(公告)日：2023-08-22

申请号：US17085785

申请日：2020-10-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Nicole Ellison ,  Xiaosong Huang ,  Lei Wang ,  Xingyi Yang

IPC: H01M4/38 ,  H01M4/133 ,  H01M4/62 ,  H01M4/134 ,  H01M4/131 ,  H01M4/525 ,  H01M4/36 ,  H01M4/1395 ,  H01M4/1393 ,  H01M4/1391 ,  H01M4/04 ,  H01M4/505 ,  H01M4/02

CPC classification number: H01M4/386 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  H01M4/622 ,  H01M2004/027

Abstract: A negative electrode is provided herein as well as methods for preparing negative electrodes and electrochemical cells including the negative electrode. The negative electrode includes a first electroactive material, an electrically conductive material, and a polymeric binder. The first electroactive material includes silicon-containing particles having an average particle diameter of at least about 1 μm, and the electrically conductive material includes graphene nanoplatelets. The polymeric binder includes a polyimide, a polyamide, polyacrylonitrile, polyacrylic acid, a salt of polyacrylic acid, polyacrylamide, polyvinyl alcohol, carboxymethyl cellulose, or a combination thereof.

公开(公告)号：US20230050401A1

公开(公告)日：2023-02-16

申请号：US17401612

申请日：2021-08-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Nicole Ellison ,  Xiaosong Huang

IPC: H01M4/583 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M4/04 ,  H01M4/36

Abstract: A cathode structure for a battery includes a substrate having an electrically conductive surface and an electrode deposited onto the electrically conductive surface. The electrode is made of two or more electrode materials, including (i) one or more active materials, and (ii) specified weight percentage ranges of multi-walled carbon nanotubes (“MWCNTs”), or milled carbon fibers (“MCFs”), or a mixture of MWCNTs and MCFs. Using the specified weight percentage ranges, the electrode may be produced with a thickness of greater than 120 μm. Also disclosed are a slurry formulation for producing thick electrodes for a battery, and a method of fabricating a cathode structure for a battery.