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    SOLID-STATE ELECTRODES AND METHODS FOR MAKING THE SAME
    32.
    发明申请
    SOLID-STATE ELECTRODES AND METHODS FOR MAKING THE SAME 有权

    公开(公告)号：US20210020929A1

    公开(公告)日：2021-01-21

    申请号：US16514193

    申请日：2019-07-17

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Dewen KONG ,  Yong LU ,  Mengyan HOU ,  Zhe LI ,  Haijing LIU

    IPC: H01M4/40 ,  H01M4/80 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/66 ,  H01M4/505

    Abstract: Solid-state electrodes and methods of forming solid-state electrodes and batteries are provided. The method includes contacting an electrode precursor with a liquid. The liquid includes one or more precursors of an ionically conductive polymer. The electrode precursor includes a plurality of electroactive particles and a plurality of electrolyte particles disposed on a current collector. A plurality of interparticle pores exists between the electroactive and electrolyte particles. When the electrode precursor is contacted with the liquid, the liquid flows into the interparticle pores. The one or more precursors of the ionically conductive polymer are electropolymerized so as to cause the formation of a polymeric matrix (including the ionically conductive polymer) that surrounds and embeds the plurality of electroactive particles and the plurality of electrolyte particles so as to form the solid-state electrode.

    HIGH POWER CATHODE ELECTRODES FOR SOLID-STATE BATTERIES
    33.
    发明申请
    HIGH POWER CATHODE ELECTRODES FOR SOLID-STATE BATTERIES 有权

    公开(公告)号：US20250149539A1

    公开(公告)日：2025-05-08

    申请号：US18521119

    申请日：2023-11-28

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Qili SU ,  Zhe LI ,  Haijing LIU

    IPC: H01M4/131 ,  H01M4/02

    Abstract: A solid-state battery cell includes A anode electrodes including an anode active material layer arranged on an anode current collector, C cathode electrodes including a cathode active material layer arranged on a cathode current collector. The cathode active material layer includes cathode active material comprising particles including an outer layer of a material selected from a group consisting of LiNbO3, Li2ZrO3, Li3PO4, and combinations thereof. A solid electrolyte has a D50 size in a range from 4 μm to 12 μm. S separators are arranged between the A anode electrodes and the C cathode electrodes, where A, C, and S are integers greater than one.

    COLUMNAR SILICON ANODE HAVING A CARBONACEOUS NETWORK AND METHODS OF FORMING THE SAME
    35.
    发明公开
    COLUMNAR SILICON ANODE HAVING A CARBONACEOUS NETWORK AND METHODS OF FORMING THE SAME 审中-公开

    公开(公告)号：US20240154095A1

    公开(公告)日：2024-05-09

    申请号：US18127444

    申请日：2023-03-28

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Zhe LI ,  Xingcheng XIAO ,  Qili SU ,  Yong LU

    IPC: H01M4/36 ,  H01M4/04 ,  H01M4/38 ,  H01M4/583 ,  H01M10/0525

    CPC classification number: H01M4/364 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/386 ,  H01M4/583 ,  H01M10/0525 ,  H01M2004/027

    Abstract: An electrochemical cell includes a first electrode that includes a first current collector and a first electroactive material layer disposed on or near the first current collector, a second electrode that includes a second current collector and a second electroactive material layer disposed on or near the second current collector, and a separating layer disposed between the first electroactive material layer and the second electroactive material layer. The second electroactive material layer includes a plurality of hierarchical silicon columns, each of the hierarchical silicon columns has a longest dimension perpendicular to a major axis of the second current collector. The second electroactive material layer also includes a carbonaceous network that at least partially fills interstices defined between hierarchical silicon columns of the plurality of hierarchical silicon columns. The carbonaceous network includes linked carbon atoms that define a plurality of pores.

    FREE-STANDING, THIN ELECTROLYTE LAYERS
    36.
    发明公开
    FREE-STANDING, THIN ELECTROLYTE LAYERS 审中-公开

    公开(公告)号：US20240021865A1

    公开(公告)日：2024-01-18

    申请号：US17939527

    申请日：2022-09-07

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

    IPC: H01M10/0562 ,  H01M10/0525 ,  H01M10/058

    CPC classification number: H01M10/0562 ,  H01M10/0525 ,  H01M10/058 ,  H01M2300/008

    Abstract: An electrochemical cell that includes a first electrode, a second electrode, and an electrolyte layer that is disposed between the first electrode and the second electrode is provided. The electrolyte layer includes a porous scaffold having a porosity greater than or equal to about 50 vol. % to less than or equal to about 90 vol. %, and a solution-processable solid-state electrolyte that at least partially fills the pores of the porous scaffold. The porous scaffold is defined by a plurality of fibers having an average diameter greater than or equal to about 0.01 micrometer to less than or equal to about 10 micrometers and an average length greater than or equal to about 1 micrometer to less than or equal to about 20 micrometers. The solution-processable solid-state electrolyte includes is selected from the group consisting of: sulfide-based solid-state particles, halide-based solid-state particles, hydride-based solid-state particles, and combinations thereof.

    POSITIVE ELECTROACTIVE MATERIALS FOR ALL-SOLID-STATE BATTERY
    37.
    发明公开
    POSITIVE ELECTROACTIVE MATERIALS FOR ALL-SOLID-STATE BATTERY 审中-公开

    公开(公告)号：US20240021809A1

    公开(公告)日：2024-01-18

    申请号：US18074784

    申请日：2022-12-05

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Zhe LI ,  Qili SU ,  Yong LU ,  Haijing LIU ,  Lianqi ZHANG ,  Yiming SUN

    IPC: H01M4/525 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0562 ,  H01M10/0525

    CPC classification number: H01M4/525 ,  H01M4/366 ,  H01M4/62 ,  H01M10/0562 ,  H01M10/0525 ,  H01M2004/028

    Abstract: The present disclosure provides a positive electroactive material for an electrochemical cell that cycles lithium ions. The positive electroactive material includes a nickel-rich material including a plurality of solid-state particles. Each solid-state particle has a heterogeneous structure that includes a core and a shell that at least partially coats the core. The core includes a nickel-cobalt-manganese material, and the shell includes a nickel-cobalt-aluminum material. When the nickel-rich material is represented by LiNi(1-x-y-z)CoxMnyAl2O2, the nickel-cobalt-manganese material is represented by LiNi(i-x″-(y/a))Cox″Mn(y/a)O2, and the nickel-cobalt-aluminum material is represented by LiNi(i-x″-(z/b))Cox″Al(z/b)O2, where (i) 1-x-y-z>0.5, (ii) a+b=1, (iii) zx″+bx″=x, and (iv) 1-x″-(y/a)>1-x″-(z/b). In certain variations, the core and the shell define a base structure, and the heterogeneous structure further includes a buffer layer that at least partially coats the base structure.

    GEL POLYMER ELECTROLYTE FOR ELECTROCHEMICAL CELL
    39.
    发明公开
    GEL POLYMER ELECTROLYTE FOR ELECTROCHEMICAL CELL 审中-公开

    公开(公告)号：US20230268551A1

    公开(公告)日：2023-08-24

    申请号：US17738767

    申请日：2022-05-06

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Zhe LI ,  Qili SU ,  Haijing LIU

    IPC: H01M10/0565 ,  H01M10/0525

    CPC classification number: H01M10/0565 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2300/0025

    Abstract: A gel polymer electrolyte for an electrochemical cell that cycles lithium ions comprises a polymer matrix infiltrated with a liquid electrolyte solution. The polymer matrix comprises poly(vinylidene fluoride-co-hexafluoropropylene). The liquid electrolyte solution comprises a nonaqueous organic solvent, a first lithium salt in the nonaqueous organic solvent, and a second lithium salt in the nonaqueous organic solvent. The first lithium salt comprises lithium difluoro(oxalato)borate and the second lithium salt comprises lithium bis(trifluoromethanesulfonyl)imide.

    POLYMERIC GEL ELECTROLYTES FOR HIGH-POWER BATTERIES
    40.
    发明公开
    POLYMERIC GEL ELECTROLYTES FOR HIGH-POWER BATTERIES 审中-公开

    公开(公告)号：US20230253618A1

    公开(公告)日：2023-08-10

    申请号：US17884419

    申请日：2022-08-09

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

    IPC: H01M10/0565

    CPC classification number: H01M10/0565 ,  H01M2300/0082

    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.

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