公开(公告)号：US20240097207A1

公开(公告)日：2024-03-21

申请号：US18127129

申请日：2023-03-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jingyuan LIU ,  Haijing LIU ,  Mark W. VERBRUGGE

IPC: H01M10/42 ,  G01R31/382 ,  G01R31/392 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/583 ,  H01M10/48 ,  H01M50/51 ,  H01M50/512

CPC classification number: H01M10/4207 ,  G01R31/382 ,  G01R31/392 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/583 ,  H01M10/425 ,  H01M10/482 ,  H01M50/51 ,  H01M50/512

Abstract: A battery includes S battery cells of a first type. Each of the S battery cells includes a plurality of first cathode electrodes and a plurality of first anode electrodes. The battery includes T battery cells of a second type, wherein each of the T battery cells includes a plurality of second cathode electrodes and a plurality of second anode electrodes, where S and T are integers greater than one. The T battery cells are arranged between the S battery cells. At least one of the plurality of first cathode electrodes includes a first cathode active material that is different than a second cathode active material of the plurality of second cathode electrodes. The plurality of first anode electrodes includes a first anode active material that is different than a second anode active material of the plurality of second anode electrodes.

公开(公告)号：US20240079544A1

公开(公告)日：2024-03-07

申请号：US17961792

申请日：2022-10-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen KONG ,  Meiyuan WU ,  Yong LU ,  Haijing LIU ,  Mark W. VERBRUGGE

IPC: H01M4/04 ,  H01M10/04

CPC classification number: H01M4/0404 ,  H01M4/0435 ,  H01M4/0471 ,  H01M10/0422 ,  H01M2010/4292

Abstract: A method for fabricating a dual-layer capacitive cabode electrode includes fabricating a first film including capacitive active material; fabricating a second film including cathode active material; hot jointing the first film and the second film to create a cabode film; and laminating the cabode film onto opposite sides of a current collector using conductive adhesive.

公开(公告)号：US20240030552A1

公开(公告)日：2024-01-25

申请号：US17945708

申请日：2022-09-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen KONG ,  Qili SU ,  Meiyuan WU ,  Haijing LIU

IPC: H01M50/451 ,  H01M50/403 ,  H01M4/62

CPC classification number: H01M50/451 ,  H01M50/403 ,  H01M4/623

Abstract: An electrode assembly for an electrochemical cell that cycles lithium ions is provided. The electrode assembly includes one or more electroactive material layers including a plurality of electroactive material particles and a plurality of binder material fibers dispersed with the electroactive material particles. At least one electroactive material particle of the plurality may have a first protective layer coated thereon, and at least one binder material fiber of the plurality may have a second protective layer coated thereon. The first and second protective layers may be the same or different. The binder material fibers can include polytetrafluoroethylene (PTFE).

公开(公告)号：US20230411685A1

公开(公告)日：2023-12-21

申请号：US17901279

申请日：2022-09-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qili SU ,  Zhi LI ,  Dewen KONG ,  Haijing LIU

IPC: H01M10/0565

CPC classification number: H01M10/0565 ,  H01M2300/0085

Abstract: The present disclosure provides an electrolyte layer for use in an electrochemical cell that cycles lithium ions. The electrolyte layer includes a porous film that defines a plurality of voids and includes a plurality of solid-state electrolyte particles and a plurality of polymeric fibrils that connect the solid-state electrolyte particles. The electrolyte layer also includes a gel polymeric electrolyte that at least partially fills the plurality of voids in the porous film. The porous film has a thickness greater than or equal to about 2 micrometers to less than or equal to about 100 micrometers, and a porosity greater than or equal to about 10 vol. % to less than or equal to about 50 vol. %. The a gel polymeric electrolyte fills greater than or equal to about 0.1% to less than or equal to about 150% of a total porosity of the porous film.

公开(公告)号：US20230343951A1

公开(公告)日：2023-10-26

申请号：US17855028

申请日：2022-06-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen KONG ,  Haijing LIU

IPC: H01M4/525 ,  H01M4/62 ,  H01M4/587 ,  H01M4/505 ,  H01M10/0525

CPC classification number: H01M4/525 ,  H01M4/623 ,  H01M4/587 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/028

Abstract: An electrochemical cell includes a positive electrode including 90 wt. % to 98 wt. % of a cobalt-free electroactive material. represented by LiNixM1-xO2 (where M is manganese, aluminum, magnesium, zirconium, chromium, or a combination thereof and x≥0.75), 0.05 wt. % to 3 wt. % a polytetrafluoroethylene (PTFE) binder having a molecular weight (MW) greater than or equal to about 6,000,000 u, and 1 wt. % to 5 wt. % of a first electronically conductive material. The electrochemical cell also includes a negative electrode including 90 wt. % to 98 wt. % of a graphite-containing negative electroactive material, 0.05 wt. % to 3 wt. % a polytetrafluoroethylene (PTFE) binder having a molecular weight (MW) greater than or equal to about 6,000,000 u, 0.05 wt. % to 2 wt. % of an ancillary binder, and 1 wt. % to 5 wt. % of a second electronically conductive material.

公开(公告)号：US20230307655A1

公开(公告)日：2023-09-28

申请号：US17738794

申请日：2022-05-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen KONG ,  Qili SU ,  Meiyuan WU ,  Haijing LIU

IPC: H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/628 ,  H01M4/623 ,  H01M10/0525 ,  H01M2004/027

Abstract: A negative electrode for an electrochemical cell that cycles lithium ions includes a particulate component embedded in a polymeric matrix component that comprises polytetrafluoroethylene. The particulate component includes a plurality of composite particles, with each of the composite particles having a core and a selective barrier layer disposed on a surface of the core. The core of each of the composite particles includes an electroactive negative electrode material. The selective barrier layer of each of the composite particles is formulated to prevent or inhibit electrochemical reactions from occurring between lithium stored in the electroactive negative electrode material of the core and the polytetrafluoroethylene in the polymeric matrix component.

公开(公告)号：US20230261246A1

公开(公告)日：2023-08-17

申请号：US17886579

申请日：2022-08-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qili SU ,  Zhe LI ,  Jingyuan LIU ,  Meiyuan WU ,  Haijing LIU

IPC: H01M10/04 ,  H01M10/613 ,  H01M10/653 ,  H01M10/6567 ,  H01M10/625 ,  H01M50/507 ,  H01M50/207 ,  H01M50/249

CPC classification number: H01M10/0431 ,  H01M10/613 ,  H01M10/653 ,  H01M10/6567 ,  H01M10/625 ,  H01M50/507 ,  H01M50/207 ,  H01M50/249 ,  H01M2220/20

Abstract: A battery system comprises N folded bipolar batteries folded in an “S”-shaped configuration. First and second folded portions of each of the N folded bipolar batteries are arranged on opposite ends of the “S”-shaped configuration. First side portions and second side portions of each of the N folded bipolar batteries are arranged between the first and second folded portions. One or more of the first folded portions on a first one of the N folded bipolar batteries are in direct electrical contact with one or more of the second folded portions on a second one of the N folded bipolar batteries. One or more of the first side portions on a third one of the N folded bipolar batteries are in direct electrical contact with one or more of the second side portions on a fourth one of the N folded bipolar batteries.

公开(公告)号：US20230246242A1

公开(公告)日：2023-08-03

申请号：US17884234

申请日：2022-08-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mengyan HOU ,  Meiyuan WU ,  Si CHEN ,  Xiachao QUE ,  Haijing LIU

IPC: H01M10/058 ,  H01M4/505 ,  H01M4/525 ,  H01M4/36 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0567 ,  H01M50/463

CPC classification number: H01M10/058 ,  H01M4/505 ,  H01M4/525 ,  H01M4/364 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0567 ,  H01M50/463 ,  H01M2004/021

Abstract: An electrochemical cell that cycles lithium ions is provided. The electrochemical cell includes a positive electrode having a positive electroactive material selected from the group consisting of LiNixM2-xO2 (where M is selected from the group consisting of cobalt, manganese, aluminum, and combinations thereof and x≥0.8), and a negative electrode having a negative electroactive composite material including a carbonaceous material and silicon oxide (SiOx, 0.95≤x≤1.05). The positive electrode has a single-sided loading capacity at room temperature between about 4.5 mAh/cm2 and about 6.5 mAh/cm2. The negative electrode has a single-sided loading capacity at room temperature between about 4.5 mAh/cm2 and about 5.5 mAh/cm2.

公开(公告)号：US20230246161A1

公开(公告)日：2023-08-03

申请号：US17882246

申请日：2022-08-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qili SU ,  Zhe LI ,  Dewen KONG ,  Mengyan HOU ,  Haijing LIU

IPC: H01M4/139 ,  H01M4/36 ,  H01M4/66 ,  H01M4/74 ,  H01M10/058 ,  H01M10/0525

CPC classification number: H01M4/139 ,  H01M4/74 ,  H01M4/366 ,  H01M4/661 ,  H01M10/058 ,  H01M10/0525 ,  H01M2004/027

Abstract: A pre-lithiated, precursor electrode includes an electroactive material layer, a current collector, and a lithium foil disposed between the electroactive material layer and the current collector. A method of preparing an electrode to be used in an electrochemical cell is provide. The method includes preparing a pre-lithiated, precursor electrode. Preparing the pre-lithiated precursor electrode includes contacting at least a first electroactive material layer with a first surface of a lithium foil assembly, where the lithium foil assembly includes a current collector and at least a first lithium foil disposed on or adjacent to a first surface of the current collector. The method may further include contacting the prelithiated, precursor electrode with an electrolyte in the electrochemical cell, where the first lithium foil at least partially or fully dissolves when contacted by the electrolyte to form the electrode and a lithium reservoir in the electrochemical cell.

公开(公告)号：US20220367848A1

公开(公告)日：2022-11-17

申请号：US17690936

申请日：2022-03-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen KONG ,  Haijing LIU ,  Meiyuan WU ,  Xiaochao QUE ,  Sherman H. ZENG ,  Xiaosong HUANG

IPC: H01M4/137 ,  H01M4/36

Abstract: The present disclosure provides an electrochemical cell that includes a double-sided electrode. The double-sided electrode includes a first electroactive material layer, a second electroactive material layer, and a current collector disposed between the first and second electroactive material layers. Each of the first and second electroactive material layers may include a plurality of electroactive material sub-films and a plurality of buffer layers disposed between adjacent electroactive material sub-films. The electrochemical cell further includes a first single-sided electrode substantially aligned with the first electroactive material layer; a first separator physically separating the first single-sided electrode and the first electroactive material layer; a second single-sided electrode substantially aligned with the second electroactive material layer; and a second separator physically separating the second single-sided electrode and the second electroactive material layer. The current collector may include at least one surface coated with an adhesive layer.