公开(公告)号：US20240079638A1

公开(公告)日：2024-03-07

申请号：US17961762

申请日：2022-10-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC.

Inventor： Qili SU ,  Zhe Li ,  Yong Lu ,  Haijing Liu

IPC: H01M10/0562 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M10/0562 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2220/20 ,  H01M2300/0065

Abstract: A battery cell includes a continuous anode electrode comprising an anode current collector. A plurality of individual cathode electrodes include a cathode current collector, cathode active material arranged on opposite sides of the cathode current collector, and a first sulfide electrolyte layer arranged on the cathode active material. The continuous anode electrode is arranged in a zig-zag pattern and the plurality of individual cathode electrodes are arranged between adjacent alternating portions of the continuous anode electrode.

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.

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.

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.

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.

公开(公告)号：US20230072660A1

公开(公告)日：2023-03-09

申请号：US17560673

申请日：2021-12-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: H01M4/78

Abstract: A battery includes positive and negative current collectors and a plurality of bipolar electrodes arranged in a stack between the positive and negative current collectors. The positive and negative current collectors and the stack of the plurality of bipolar electrodes are folded in an S-shape.

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：US20210135224A1

公开(公告)日：2021-05-06

申请号：US17084782

申请日：2020-10-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mengyan HOU ,  Haijing LIU ,  Qili SU ,  Xiaochao QUE

IPC: H01M4/62 ,  H01M2/26

Abstract: A hybrid electrochemical device including at least two electrically connected solid-state electrochemical cells is provided. Each electrochemical cell includes a first outer electrode having a first current collector and a first electroactive layer, a second outer electrode having a second current collector and a second electroactive layer, and one or more intervening electrodes disposed between the electroactive layers. At least one of the intervening electrodes includes one or more capacitor additives. The first outer electrode is electrically connected to at least one of the intervening electrodes in a first electrical configuration. The second outer electrode is electrically connected to at least one of the intervening electrodes in a second electrical configuration. The at least two electrochemical cells are electrically connected in a third electrical configuration. The first and second electrical configurations are the same and the third electrical configuration is distinct from the first and second electrical configurations.