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公开(公告)号：US20240235304A1
公开(公告)日：2024-07-11
申请号：US18364868
申请日：2023-08-03
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Sayed Youssef Sayed NAGY , Anil K. Sachdev , Anthony Michael Coppola , Jian Yao , Chengwu Duan
Abstract: A process for making a hollow electrical coil for an electric motor includes forming a sacrificial insert material into a coil shaped insert. The coil shaped insert is placed into a copper plating bath and a copper plated coil shaped member is removed from the copper plating bath. The sacrificial material is removed from within the copper plated coil shaped member to create a hollow passage through a hollow copper coil shaped member. An exterior of the hollow copper coil shaped member is coated with an insulating adhesive material and the copper coil shaped member is compressed until the insulating adhesive material is set.
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公开(公告)号：US20240218544A1
公开(公告)日：2024-07-04
申请号：US18087410
申请日：2022-12-22
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Sayed Youssef Sayed NAGY , Jeffrey David CAIN , Nicholas Paul William PIECZONKA , Thomas E. MOYLAN , Yuntao GU
Abstract: A method for extracting lithium from lithium-based materials to be recycled using an electrochemical reactor includes applying a voltage to a current collector at least partially disposed in an electrolyte carried by the electrochemical reactor, where the lithium-based materials including lithium to be recovered is disposed in the electrolyte and lithium ions move from the lithium-based material towards the current collector upon application of the voltage. In certain variations, the method may also include, prior to the application of the voltage, applying a current to the current collector.
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公开(公告)号：US20240213438A1
公开(公告)日：2024-06-27
申请号：US18087421
申请日：2022-12-22
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jeffrey David CAIN , Thomas E. MOYLAN , Sayed Youssef Sayed NAGY , Nicholas Paul William PIECZONKA , Yuntao GU
IPC: H01M4/04
CPC classification number: H01M4/0459
Abstract: A method for forming an electroactive material includes sourcing a current or voltage to an electrochemical reactor that includes a cation source, an electrolyte mixture, and an electroactive material precursor in contact with one another, where the current or voltage serves to ionize and form cations at the cation source that react with the electroactive material precursor in the electrolyte mixture to form the electroactive material. The method may include one or more filtering steps, one or more rinsing steps, or a combination of one or more filtering steps and one or more rinsing steps to collect the electroactive material from the electrolyte.
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公开(公告)号：US20240047693A1
公开(公告)日：2024-02-08
申请号：US17879419
申请日：2022-08-02
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jeffrey David CAIN , Thomas E. MOYLAN , Caleb REESE , Sayed Youssef Sayed NAGY , Andrew Clay BOBEL
CPC classification number: H01M4/661 , H01M4/0471 , H01M4/0423
Abstract: An electrode assembly that includes a current collector, a lithium foil, and a solid solution interface that chemically binds the current collector and the lithium foil is provided. The solid solution interface includes a portion of the current collector that is impregnated with lithium atoms diffused from the lithium foil. In some variations, a method for forming the electrode assembly includes heating a precursor electrode assembly that includes a current collector and a lithium metal film to a temperature that is less than a melting point of lithium, so that lithium atoms diffuse into the current collector during the heating. In other variations, a method for forming the electrode assembly includes disposing a molten lithium onto a heated current collector to form a precursor electrode assembly, and cooling the assembly to form a lithium metal layer that is chemically bonded to the current collector.
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公开(公告)号：US20240429401A1
公开(公告)日：2024-12-26
申请号：US18338554
申请日：2023-06-21
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Sayed Youssef Sayed NAGY , Anil K. SACHDEV , Diptak BHATTACHARYA
Abstract: A method for manufacturing a current collector for an electrode of a battery cell includes providing a wire mesh current collector including a plurality of first wires and a plurality of second wires that overlap to form a plurality of mesh joints. A diameter of the plurality of first wires and the plurality of second wires is in a range from 4 μm to 100 μm. The method includes coating the wire mesh current collector with a metal coating by immersing the wire mesh current collector in a bath including a metal salt.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20240322116A1
公开(公告)日：2024-09-26
申请号：US18125824
申请日：2023-03-24
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Sayed Youssef Sayed NAGY , Caleb Reese , Yoojin Kim
CPC classification number: H01M4/045 , C25D3/42 , C25D9/08 , H01M4/0435
Abstract: A method for manufacturing a battery cell includes connecting a current collector to a working electrode; connecting a zinc metal portion to a counter electrode; immersing the current collector and a portion of the working electrode in a liquid; immersing the zinc metal portion and a portion of the counter electrode in the liquid; supplying molecular oxygen into the liquid; and electrochemically coating the current collector with a zinc oxide layer.
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7.发明公开公开(公告)号：US20240047653A1
公开(公告)日：2024-02-08
申请号：US17880515
申请日：2022-08-03
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Sayed Youssef Sayed NAGY , Caleb REESE , Jeffrey David CAIN
IPC: H01M4/36 , H01M10/0525 , H01M4/58 , H01M4/04
CPC classification number: H01M4/366 , H01M10/0525 , H01M4/5825 , H01M4/0416
Abstract: The present disclosure provides a method for preparing an electroactive material for an electrochemical cell that cycles lithium ions. The method includes immersing a plurality of electroactive material particles in an aqueous solution and adding one or more fluorinated lithium salts to the aqueous solution to form a protective particle coating on each of the electroactive material particles of the plurality of electroactive material particles, where the plurality of electroactive material particles defines the electroactive material. The protective particle coatings are continuous coatings that cover greater than or equal to about 95% of a total exposed surface area of each electroactive material particle of the plurality of electroactive material particles.
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8.发明公开公开(公告)号：US20240258526A1
公开(公告)日：2024-08-01
申请号：US18103129
申请日：2023-01-30
Applicant: GM Global Technology Operations LLC
Inventor： Sayed Youssef Sayed NAGY , Meng JIANG , Thomas E. MOYLAN , Jeffrey David CAIN , Caleb REESE , Anil K. SACHDEV
CPC classification number: H01M4/625 , H01M4/0404 , H01M4/661
Abstract: A composite electrode for an electrochemical cell that cycles lithium ions may include a metal current collector having a three-dimensional porous structure defining an interconnected network of open pores and an electrode material disposed within the open pores of the current collector. An oxygen-containing reactive layer may be formed on surfaces of the current collector and an electrode precursor mixture may be deposited thereon and dried to form a solid electrode material having a continuous structure within the open pores of the current collector. The electroactive material particles and/or the electrically conductive agent may interact with the oxygen-containing reactive layer on the metal current collector to form an oxygen-containing adhesive layer along an interface between the current collector and the solid electrode material. The electroactive material particles and the electrically conductive agent may be chemically bonded to the current collector via hydrogen bonds within the oxygen-containing adhesive layer.
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公开(公告)号：US20240258494A1
公开(公告)日：2024-08-01
申请号：US18102163
申请日：2023-01-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Sayed Youssef Sayed NAGY , Thomas E. MOYLAN , Jeffrey David CAIN , Anil K. SACHDEV
IPC: H01M4/04 , H01M4/38 , H01M4/40 , H01M10/0525
CPC classification number: H01M4/0442 , H01M4/386 , H01M4/405 , H01M10/0525
Abstract: A method for preparing an electroactive material for an electrochemical cell that cycles lithium ions includes applying a potential to a first assembly that includes a first electrode and an aqueous electrolyte. The aqueous electrolyte includes a lithium salt and as the potential is applied the lithium salt disassociates forming cations and anions. The first assembly is physically separated from a second assembly by a lithium ion-conducting separator. The second assembly includes a second electrode and a non-aqueous electrolyte. The electroactive material is formed as the cations move from the first assembly through the lithium ion-conducting separator towards the second electrode.
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公开(公告)号：US20230411610A1
公开(公告)日：2023-12-21
申请号：US17840928
申请日：2022-06-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yuntao GU , Jeffrey David CAIN , Sayed Youssef Sayed NAGY , Nicholas Paul William PIECZONKA , Thomas E. MOYLAN
CPC classification number: H01M4/386 , H01M4/366 , H01M2004/027
Abstract: The present disclosure provides a method for forming a pre-lithiated layered anode material. The method includes removing cations from a precursor material including a layered ionic compound to form creates a two-dimensional structure that defines a layered anode material. The method further includes inserting lithium ions using an anion insertion wet-chemical process into the layered anode materials to form the pre-lithiated layered anode material. The anion insertion wet-chemical process can be the same as or different form the cation extraction wet-chemical process. In each instance, the precursor material is be represented by MX2, where M is one of calcium (Ca) and magnesium (Mg) and X is one of silicon (Si), germanium (Ge), and boron (B) and the precursor material has alternating layers of M and X.
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