公开(公告)号：US20220263055A1

公开(公告)日：2022-08-18

申请号：US17550507

申请日：2021-12-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mengyan HOU ,  Qili SU ,  Meiyuan WU ,  Haijing LIU

IPC: H01M4/04 ,  H01M10/0585 ,  H01M10/0565

Abstract: A method for forming a bipolar solid-state battery may include preparing a plurality of freestanding gels each comprising a polymer, a solvent, and a lithium salt and, also, positioning a first freestanding gel between a first electrode and a second electrode and a second freestanding gel between the second electrode and a third electrode. Each of the first electrode, the second electrode, and the third electrode may include a plurality of electroactive particles. The method may also include infiltrating at least a portion of the first free-standing gel into a space between particles of the first electrode and the second electrode and at least a portion of the second free-standing gel into a space between the particles of second electrode and the third electrode.

公开(公告)号：US20220173377A1

公开(公告)日：2022-06-02

申请号：US17539901

申请日：2021-12-01

Applicant: GM Global Technology Operations LLC

Inventor： Dewen KONG ,  Xiaochao QUE ,  Haijing LIU ,  Xiaosong HUANG ,  Mark W. VERBRUGGE ,  Meiyuan WU

IPC: H01M4/136 ,  H01M4/58 ,  H01M4/66 ,  H01M4/62 ,  H01M10/0525

Abstract: The present disclosure relates to high capacity (e.g., areal capacity greater than about 4 mAh/cm2 to less than or equal to about 50 mAh/cm2) electrodes for electrochemical cells. An example electrode may include a current collector (e.g., meshed current collector) and one or more electroactive material layers having thicknesses greater than about 150 μm to less than or equal to about 5 mm. The electroactive material layers may each include lithium manganese iron phosphate (LiMnxFe1-xPO4, where 0≤x≤1) (LMFP). The electrode may further include one or more electronically conductive adhesive layers disposed between the current collector and the electroactive material layers. The adhesive layers may include one or more polymer components and one or more conductive fillers. The electroactive material layers may be gradient layers, where sublayers closer to the current collector has a lower porosity than layers further from the current collector.

公开(公告)号：US20240243249A1

公开(公告)日：2024-07-18

申请号：US18355289

申请日：2023-07-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen KONG ,  Meiyuan WU ,  Haijing LIU ,  Hui HE ,  Shubha NAGESWARAN

IPC: H01M4/134 ,  H01M4/133 ,  H01M4/525 ,  H01M4/62 ,  H01M4/80

CPC classification number: H01M4/134 ,  H01M4/133 ,  H01M4/525 ,  H01M4/623 ,  H01M4/80 ,  H01M2004/027

Abstract: A negative electrode for an electrochemical cell that cycles lithium includes a negative electrode including an electroactive material layer disposed on a current collector that has lithiated silicon oxide (LSO) negative electroactive material at ≥ about 10 weight % to ≤ about 30 weight % of a total weight of the electroactive material layer and a carbonaceous negative electroactive material, such as graphite. An electrochemical cell that incorporates such a negative electrode may also include a second electrode comprising a porous positive active material layer comprising a positive lithium containing, nickel-rich electroactive material, such as a lithium nickel manganese cobalt aluminum oxide, a porous separating layer disposed between the first electrode and the second electrode and an electrolyte disposed in pores of the separating layer.

公开(公告)号：US20240038998A1

公开(公告)日：2024-02-01

申请号：US17888613

申请日：2022-08-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhe LI ,  Dave G. RICH ,  Meiyuan WU ,  Jingyuan LIU ,  Haijing LIU

IPC: H01M4/66 ,  H01M10/0585

CPC classification number: H01M4/667 ,  H01M4/661 ,  H01M4/668 ,  H01M4/663 ,  H01M10/0585 ,  H01M2004/021

Abstract: A battery cell includes a plurality of cathodes and a plurality of anodes. A plurality of solid electrolyte layers are arranged between first adjacent ones of the plurality of cathodes and the plurality of anodes. A plurality of clad current collectors are arranged between second adjacent ones of the plurality of cathodes and the plurality of anodes. The plurality of clad current collector includes a first foil layer, a second foil layer and a thermal interface layer including adhesive and at least one material that increases thermal and electrical conductivity of the thermal interface layer.

公开(公告)号：US20230402585A1

公开(公告)日：2023-12-14

申请号：US17879210

申请日：2022-08-02

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yong LU ,  Zhe LI ,  Meiyuan WU ,  Haijing LIU

IPC: H01M4/36 ,  H01M10/0525

CPC classification number: H01M4/366 ,  H01M10/0525 ,  H01M2004/027

Abstract: A hybridized lithium-ion battery that includes one or more positive electrode assemblies is provided. Each of the one or more positive electrode assemblies includes a positive electrode current collector and one or more positive electroactive material layers disposed on one or more surfaces of the positive electrode current collector. The hybridized lithium-ion battery also includes two or more negative electrode current collectors, and one or more negative electroactive material layers disposed on one or more surfaces of at least one of the two or more negative electrode current collectors, where a total number of the one or more positive electroactive material layers is greater than a total number of negative electroactive material layers. The hybridized lithium-ion battery also includes two or more separating layers physically separating the positive electrode assemblies and the negative electroactive material layers or the positive electrode assemblies and the negative electrode current collectors.

公开(公告)号：US20230378610A1

公开(公告)日：2023-11-23

申请号：US17869657

申请日：2022-07-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhe LI ,  Meiyuan WU ,  Yong LU ,  Haijing LIU

IPC: H01M50/46 ,  H01M4/04 ,  H01M10/0525 ,  H01M50/409 ,  H01M10/0565

CPC classification number: H01M50/46 ,  H01M4/0404 ,  H01M10/0525 ,  H01M50/409 ,  H01M10/0565 ,  H01M2300/0082

Abstract: A polymer blocker for use in an electrochemical battery that cycles lithium ions is provided. The polymer blocker includes a polymeric layer, a first adhesive layer that includes a first adhesive and is disposed on or near a first surface of the polymeric layer, and a second adhesive layer that includes a second adhesive and is disposed on or near a second surface of the polymeric layer. The polymeric layer has a porosity greater than or equal to about 50 vol. % to less than or equal to about 95 vol. %. A portion of the first adhesive impregnates a first portion of the polymeric layer, and a portion of the second adhesive impregnating a second portion of the polymeric layer. The first and second portions of the polymeric layer may be the same or different.

公开(公告)号：US20230344000A1

公开(公告)日：2023-10-26

申请号：US17884410

申请日：2022-08-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yong LU ,  Zhe LI ,  Meiyuan WU ,  Haijing LIU

IPC: C08K3/22 ,  C08G59/50 ,  C08K3/36 ,  H01M10/0525 ,  H01M10/28 ,  H01M10/0565

CPC classification number: H01M10/0565 ,  C08G59/50 ,  C08K3/22 ,  C08K3/36 ,  H01M10/0525 ,  H01M10/282 ,  C08K2003/2227 ,  C08K2003/2241 ,  C08K2003/2244 ,  H01M2300/0028 ,  H01M2300/0082 ,  H01M2300/0085

Abstract: Methods of forming a battery via in situ polymerization are provided. A precursor of a first blocker composition is applied to select edge regions of at least one bipolar electrode and terminal negative and positive electrodes. The components are assembled to form a stack with at least two insulating interlayers disposed between electrodes of opposite polarities. The precursor is reacted to form a first blocker composition sealing three sides of the stack to define a fillable interior region. Next, a polymer electrolyte precursor is injected into the fillable interior region. A precursor of a second blocker composition is applied to a terminal region of the fourth side of the stack. The precursors are concurrently reacted to form a polymer electrolyte and a second blocker composition along the fourth side. The first and second blocker compositions define a sealed pouch including the stack comprising the polymer electrolyte.

公开(公告)号：US20230317966A1

公开(公告)日：2023-10-05

申请号：US17853690

申请日：2022-06-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhe LI ,  Qi LU ,  Yong LU ,  Meiyuan WU ,  Qili SU ,  Haijing LIU

IPC: H01M4/76 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/44 ,  H01M4/62 ,  H01M4/134

CPC classification number: H01M4/762 ,  H01M10/0525 ,  H01M10/0562 ,  H01M2004/027 ,  H01M4/626 ,  H01M4/625 ,  H01M4/134 ,  H01M10/44

Abstract: An electrochemical cell that cycles lithium ions includes a positive electrode, a negative electrode current collector spaced apart from the positive electrode, and an ionically conductive electrolyte disposed between the positive electrode and the negative electrode current collector. The negative electrode current collector is of unitary one-piece construction and has a three-dimensional porous structure that defines an interconnected network of open pores. During charging of the electrochemical cell, lithium metal is deposited within the open pores of the negative electrode current collector.

公开(公告)号：US20230253617A1

公开(公告)日：2023-08-10

申请号：US17884239

申请日：2022-08-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: H01M10/0565 ,  H01M4/505 ,  H01M4/583

CPC classification number: H01M10/0565 ,  H01M4/505 ,  H01M4/583 ,  H01M2300/0085 ,  H01M2300/0082 ,  H01M2300/0028

Abstract: A polymeric gel electrolyte for an electrochemical cell, such as a solid-state battery, is provided herein as well an electrochemical cell including the polymeric gel electrolyte. The polymeric gel electrolyte includes one or more lithium salts, a plasticizer component, an additive component, and a polymeric host. Examples of the plasticizer component include a carbonate, a lactone, a nitrile, a sulfone, an ether, a phosphate, and combinations thereof. The additive component includes a boron-containing additive and a carbonate-containing additive.

公开(公告)号：US20230246172A1

公开(公告)日：2023-08-03

申请号：US17746575

申请日：2022-05-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhe LI ,  Qili SU ,  Yong LU ,  Meiyuan WU ,  Haijing LIU

IPC: H01M4/36 ,  H01M4/62 ,  H01M10/0565 ,  H01M4/58 ,  H01M10/0525

CPC classification number: H01M4/366 ,  H01M4/62 ,  H01M10/0565 ,  H01M4/5815 ,  H01M10/0525 ,  H01M2004/028

Abstract: A positive electrode including an active layer is provided, where the active layer includes a plurality of positive electroactive solid-state particles, a lithium-source material coated on or dispersed with the positive electroactive solid-state particles in the active layer, and a polymeric gel electrolyte at least partially filling voids between the positive electroactive solid-state particles in the active layer. The lithium-source material having a theoretical specific capacity greater than or equal to about 100 mAh/g to less than or equal to about 3,000 mAh/g.