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公开(公告)号:US20240379997A1
公开(公告)日:2024-11-14
申请号:US18633792
申请日:2024-04-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Zhe LI , Qili SU , Yong LU , Haijing LIU
IPC: H01M10/0562 , H01M4/131 , H01M4/134 , H01M10/0585
Abstract: A solid-state battery cell includes a cathode electrode includes a cathode current collector and a cathode active layer arranged on the cathode current collector and including cathode active material and a solid electrolyte. A separator layer comprises the solid electrolyte. An anode layer comprises an anode current collector and a silicon layer arranged on the anode current collector and including a plurality of concave spherical surfaces.
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公开(公告)号:US20240250301A1
公开(公告)日:2024-07-25
申请号:US18127524
申请日:2023-03-28
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Dewen KONG , Haijing LIU , Si CHEN , Mengyan HOU , Mark W. VERBRUGGE
IPC: H01M10/0567 , H01M4/36 , H01M4/58 , H01M4/583 , H01M10/0525 , H01M10/0568 , H01M10/0569 , H01M50/46
CPC classification number: H01M10/0567 , H01M4/364 , H01M4/5825 , H01M4/583 , H01M10/0525 , H01M10/0568 , H01M10/0569 , H01M50/46 , H01M2004/027 , H01M2300/0037 , H01M2300/0051
Abstract: An electrochemical cell that cycles lithium ions includes a positive electrode that includes a positive electroactive material, a negative electrode that includes a silicon-containing negative electroactive material, a separating layer disposed between the positive electrode and the negative electrode, and an electrolyte that is in contact with at least one of the positive electroactive material, the negative electroactive material, and the separating layer. The electrolyte includes greater than or equal to about 0.1 wt. % to less than or equal to about 10 wt. % of a phosphite-type additive.
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3.
公开(公告)号:US20240154125A1
公开(公告)日:2024-05-09
申请号:US18128607
申请日:2023-03-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Dewen KONG , Haijing LIU
IPC: H01M4/62 , H01M4/525 , H01M4/58 , H01M10/0525 , H01M10/0568 , H01M10/0569
CPC classification number: H01M4/623 , H01M4/525 , H01M4/58 , H01M10/0525 , H01M10/0568 , H01M10/0569
Abstract: A battery includes: an anode electrode including a lithium metal; a cathode electrode; and a lithium fluoride (LiF) layer disposed on at least one of the anode electrode and the cathode electrode formed via a reaction between a polytetrafluoroethylene (PTFE) layer and the at least one of anode electrode and the cathode electrode during a formation process of the battery.
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公开(公告)号:US20240079594A1
公开(公告)日:2024-03-07
申请号:US17981128
申请日:2022-11-04
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Qili SU , Zhe LI , Yong LU , Haijing LIU
IPC: H01M4/62 , H01M4/139 , H01M10/0525 , H01M10/0562
CPC classification number: H01M4/623 , H01M4/139 , H01M10/0525 , H01M10/0562 , H01M2004/021
Abstract: In various aspects, the present disclosure provides solvent-free methods of making a solid-state electrode active layer for a solid-state electrode in an electrochemical cell that cycles lithium ions, by using a plurality of solid polymeric binder particles capable of fibrillation with porous fibrillation particles with a first shear force to at least partially fibrillate the solid polymeric binder particles to form a polymeric binder mixture. The disclosure also contemplates a current collector and a porous active layer disposed thereon. The porous active layer includes a fibrous polymeric network having a plurality of solid particles distributed therein. The solid particles may include electroactive material particles, solid-state electrolyte particles, and porous fibrillation particles.
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5.
公开(公告)号:US20240038996A1
公开(公告)日:2024-02-01
申请号:US17950738
申请日:2022-09-22
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Dewen KONG , Meiyuan WU , Si CHEN , Haijing LIU
IPC: H01M4/62 , H01M4/04 , H01M10/0525
CPC classification number: H01M4/625 , H01M4/0404 , H01M4/622 , H01M10/0525 , H01M2004/021
Abstract: A method of making a capacitor-assisted hybrid electrode for a lithium-ion electrochemical cell includes admixing a solvent, a cellulose-based dispersant, and a plurality of capacitive particles comprising carbon to form a dispersion. The cellulose-based dispersant forms hydrogen bonds with one or more carbonyl-groups on the capacitive particles comprising carbon. The dispersion is combined with an electroactive material, an electrically conductive material, and a binder to form a slurry. The slurry is applied to a current collector and solidified to form the capacitor-assisted hybrid electrode having a composite hybrid active layer on the current collector. Capacitor-assisted hybrid electrodes formed from such methods are also provided.
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公开(公告)号:US20240021866A1
公开(公告)日:2024-01-18
申请号:US17941299
申请日:2022-09-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Zhe LI , Qili SU , Jingyuan LIU , Haijing LIU , Mark W. VERBRUGGE
IPC: H01M10/0562 , H01M10/0525 , H01M50/449
CPC classification number: H01M10/0562 , H01M10/0525 , H01M50/449 , H01M2300/0068 , H01M2300/0077
Abstract: The present disclosure provides an electrochemical cell that cycles lithium ions. The electrochemical cell includes a first electrode, a second electrode, a separator physically separating the first and second electrodes, a solid-state interlayer disposed between the separator and the first electrode, and a liquid electrolyte disposed in each of the first electrode, the second electrode, the separator, and the solid-state interlayer. The solid-state interlayer includes a plurality of solid-state electrolyte particles. The solid-state interlayer covers greater than or equal to about 85% of a total surface area of the surface of the first electrode.
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7.
公开(公告)号:US20240014470A1
公开(公告)日:2024-01-11
申请号:US17886975
申请日:2022-08-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Dewen KONG , Jingyuan LIU , Haijing LIU , Dave G. RICH , Christian FAU
IPC: H01M16/00
CPC classification number: H01M16/003 , H01M4/131
Abstract: A battery cell comprises C electrodes each including a first current collector, first and second capacitive layers, and first and second active material layers. The first and second capacitive layers and the first and second active material layers are arranged on the first current collector. E anode electrodes include a second current collector and third and fourth active material layers arranged on the second current collector. E and C are integers greater than zero.
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公开(公告)号:US20240014440A1
公开(公告)日:2024-01-11
申请号:US17900048
申请日:2022-08-31
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Qili SU , Zhe LI , Haijing LIU , Lidan XING , Lijiao QUAN
IPC: H01M10/0565
CPC classification number: H01M10/0565 , H01M10/0525
Abstract: The present disclosure a gel polymer electrolyte for an electrochemical cell that cycles lithium ions. The gel polymer electrolyte includes a polymer host, a liquid electrolyte, and greater than or equal to about 0.1 wt. % to less than or equal to about 10 wt. % of a sulfolene additive. In certain variations, the gel polymer electrolyte also includes greater than or equal to about 0.1 wt. % to less than or equal to about 5 wt. % of an ethylene carbonate additive. The ethylene carbonate additive may be selected from the group consisting of: vinyl ethylene carbonate (VEC), fluoroethylene carbonate (FEC), vinylene carbonate, and combinations thereof. In each instance, the lithium electrolyte may include a first lithium salt, a second lithium salt that is distinct from the first lithium salt, and a third lithium salt that is distinct from the first lithium salt and the second lithium salt.
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公开(公告)号:US20230299342A1
公开(公告)日:2023-09-21
申请号:US17884226
申请日:2022-08-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Zhe LI , Yong LU , Meiyuan WU , Haijing LIU
IPC: H01M10/0565 , H01M10/0525
CPC classification number: H01M10/0565 , H01M10/0525 , H01M2300/0082
Abstract: A free-standing electrolyte layer for use in an electrochemical cell is provided. The free-standing electrolyte layer includes a plurality of solid-state electrolyte particles, a (first) ionic liquid that surrounds each solid-state electrolyte particle of the plurality of solid-state electrolyte particles, and a plurality of polytetrafluoroethylene fibrils that provides a structural framework for the solid-state electrolyte particles. The free-standing electrolyte layer has an ionic conductivity greater than or equal to about 0.1 mS/cm at 40° C., and a thickness greater than or equal to about 5 micrometers to less than or equal to about 500 micrometers. Each of the polytetrafluoroethylene fibrils of the plurality of polytetrafluoroethylene fibrils has an average length of greater than or equal to about 2 micrometers to less than or equal to about 100 micrometers. The electrochemical cell may include one or more electrodes including a (second) ionic liquid and/or plurality of polytetrafluoroethylene (PTFE) fibrils.
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公开(公告)号:US20230024667A1
公开(公告)日:2023-01-26
申请号:US17707524
申请日:2022-03-29
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Zhe LI , Yong LU , Haijing LIU , Meiyuan WU
IPC: H01M10/0562 , H01M4/04
Abstract: The present disclosure provides a method for making a solid-state argyrodite electrolyte represented by Li6PS5X (where X is selected from chloride, bromide, iodine, or a combination thereof) having an ionic conductivity greater than or equal to about 1.0×10−4 S/cm to less than or equal to about 10×10−3 S/cm at about 25° C. The method may include contacting a first suspension and a first solution to form a precursor, where the first suspension is a Li3PS4 suspension including an ester solvent and the first solution is a Li2S and LiX (where X is selected from chloride, bromide, or iodine, or a combination thereof) solution including an alcohol solvent; and removing the ester solvent and the alcohol solvent from the precursor to form the solid-state argyrodite electrolyte.
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