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1.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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2.发明公开公开(公告)号：US20240234738A9
公开(公告)日：2024-07-11
申请号：US17972063
申请日：2022-10-24
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Robin JAMES , Megan E. MCGOVERN , Dmitriy BRUDER , Whitney Ann POLING , Erik Damon HUEMILLER , Shaomao XU , Caleb REESE
CPC classification number: H01M4/626 , H01M4/0404 , H01M4/661
Abstract: The present disclosure provides electrode assemblies for safe nondestructive testing in ambient conditions. In certain variations, the electrode assembly includes a current collector and a non-reactive lithium mimic material disposed on or near one or more surfaces of the current collector or embedded in the current collector. In other variations, the electrode assembly includes include a current collector, a lithium metal material disposed on or near one or more surfaces of the current collector or embedded in the current collector to form an electrode assembly, and a non-conductive pouch holding the electrode assembly.
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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：US20250140775A1
公开(公告)日：2025-05-01
申请号：US18494203
申请日：2023-10-25
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Sayed Youssef Sayed NAGY , Diptak BHATTACHARYA , Caleb REESE , Anil K. SACHDEV
Abstract: A method for manufacturing a battery cell includes coating a three dimensional current collector (3DCC) with a lithiophilic metal oxide layer; and one of laminating the 3DCC with the lithiophilic metal oxide layer between a first lithium metal layer and a second lithium metal layer to create an anode electrode; and coating the 3DCC with the lithiophilic metal oxide layer with molten lithium to create an anode electrode.
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公开(公告)号：US20250158013A1
公开(公告)日：2025-05-15
申请号：US18507783
申请日：2023-11-13
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Joel G. TONER , Diptak BHATTACHARYA , Caleb REESE , Andrew Clay BOBEL , Anil K. SACHDEV
Abstract: A method for manufacturing an electrode for a battery cells includes supplying an active material layer, a current collector, and a dummy current collector between a first roller and a second roller; using one of the first roller and the second roller, biasing the current collector into the active material layer below an outer surface of the active material layer using the dummy current collector; and removing the dummy current collector from the active material layer.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20240136533A1
公开(公告)日：2024-04-25
申请号：US17972063
申请日：2022-10-23
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Robin JAMES , Megan E. MCGOVERN , Dmitriy BRUDER , Whitney Ann POLING , Erik Damon HUEMILLER , Shaomao XU , Caleb REESE
CPC classification number: H01M4/626 , H01M4/0404 , H01M4/661
Abstract: The present disclosure provides electrode assemblies for safe nondestructive testing in ambient conditions. In certain variations, the electrode assembly includes a current collector and a non-reactive lithium mimic material disposed on or near one or more surfaces of the current collector or embedded in the current collector. In other variations, the electrode assembly includes include a current collector, a lithium metal material disposed on or near one or more surfaces of the current collector or embedded in the current collector to form an electrode assembly, and a non-conductive pouch holding the electrode assembly.
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公开(公告)号：US20230261173A1
公开(公告)日：2023-08-17
申请号：US17673437
申请日：2022-02-16
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Caleb REESE , Leng MAO , Andrew Clay BOBEL , Jeffrey David Cain
IPC: H01M4/134 , H01M10/0525 , H01M4/38 , H01M4/04
CPC classification number: H01M4/134 , H01M10/0525 , H01M4/382 , H01M4/0492 , H01M4/044 , H01M2004/021
Abstract: An electrode including an electrochemical layer defining a surface having a plurality of dimples formed thereon is provided. The dimples have an average lateral size greater than or equal to about 100 nm to less than or equal to about 100 μm, and an average depth greater than or equal to about 100 nm to less than or equal to about 50 μm. In certain variations, the dimples are formed in situ by applying a current to the electrochemical layer. In other variations, the dimples are formed by moving a roller having a plurality of shapes defined thereon along one or more surfaces of the electrochemical layer. In still other variations, the dimples are formed by contacting one or more surfaces of the electrochemical layer with a chemical etchant.
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公开(公告)号：US20240413295A1
公开(公告)日：2024-12-12
申请号：US18330724
申请日：2023-06-07
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Andrew Clay BOBEL , Diptak BHATTACHARYA , Zhenke TENG , Caleb REESE , Sayed Yousef Sayed NAGY , Anil K. SACHDEV
Abstract: A method for manufacturing a current collector for an electrode of a battery cell includes providing a wire mesh current collector including wires that have a diameter and form mesh junctions; and rolling the wire mesh current collector using a first roller and a second roller, wherein the first roller and the second roller are spaced by a predetermined gap. The predetermined gap is less than 2 times the diameter of the wires of the wire mesh current collector.
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9.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：US20240234739A9
公开(公告)日：2024-07-11
申请号：US17971326
申请日：2022-10-21
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Diptak BHATTACHARYA , Caleb REESE , Thomas E. MOYLAN , Andrew Clay BOBEL , Anil K. SACHDEV
IPC: H01M4/66 , H01M4/04 , H01M4/62 , H01M10/0525
CPC classification number: H01M4/662 , H01M4/0471 , H01M4/621 , H01M4/669 , H01M10/0525 , H01M2004/021
Abstract: An electrode assembly includes a current collector, a lithium metal foil, and an alloyed interface that chemically binds the current collector and the lithium metal foil. In certain variations, the alloyed interface includes an intermediate layer disposed between the current collector and the lithium metal foil, a portion of the current collector adjacent to the intermediate layer is alloyed with the indium, gallium, or alloy of indium and gallium defining the intermediate layer, and a portion of the lithium metal foil adjacent to the intermediate layer is alloyed with the indium, gallium, or alloy of indium and gallium defining the intermediate layer. In other variations, the alloyed interface includes a copper-lithium alloy.
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