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公开(公告)号：US20230019313A1
公开(公告)日：2023-01-19
申请号：US17698874
申请日：2022-03-18
发明人： Leng MAO , Jeffrey David CAIN , Andrew Clay BOBEL , Anil K. SACHDEV , Dewen KONG
IPC分类号： H01M4/38 , H01M4/48 , H01M4/583 , H01M4/62 , H01M10/0525
摘要： The present disclosure provides a negative electrode for an electrochemical cell that cycles lithium ions. The negative electrode may include a negative electroactive material and a lithiation additive. The negative electroactive material may have a first cell voltage window. The lithiation additive may have a second cell voltage window. The second cell voltage window may be less than the first cell voltage window. When the electrochemical cell is operated in the second cell voltage window, the lithiation additive may lithiated the cell.
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公开(公告)号：US20220384776A1
公开(公告)日：2022-12-01
申请号：US17336073
申请日：2021-06-01
IPC分类号： H01M4/134
摘要： The present disclosure provides an electroactive material for an electrochemical cell that cycles lithium ions. The electroactive material includes a plurality of electroactive particles having an average diameter greater than or equal to about 100 nm to less than or equal to about 50 μm. Each electroactive particle includes a layered anode material defined by a two-dimensional allotrope. The two-dimensional allotrope includes a plurality of atomic layers that include a negative electroactive material selected from the group consisting of: silicon (Si), germanium (Ge), boron (B), and combinations thereof. In certain variations, the layered anode material may be prelithiated. For example, lithium ions may be dispersed between the atomic layers of the two-dimensional allotrope to pre-lithiate the layered anode material.
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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
发明人： Sayed Youssef Sayed NAGY , Jeffrey David CAIN , Nicholas Paul William PIECZONKA , Thomas E. MOYLAN , Yuntao GU
摘要： 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
发明人： Jeffrey David CAIN , Thomas E. MOYLAN , Sayed Youssef Sayed NAGY , Nicholas Paul William PIECZONKA , Yuntao GU
IPC分类号： H01M4/04
CPC分类号： H01M4/0459
摘要： 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
发明人： Jeffrey David CAIN , Thomas E. MOYLAN , Caleb REESE , Sayed Youssef Sayed NAGY , Andrew Clay BOBEL
CPC分类号： H01M4/661 , H01M4/0471 , H01M4/0423
摘要： 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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6.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
发明人： Sayed Youssef Sayed NAGY , Meng JIANG , Thomas E. MOYLAN , Jeffrey David CAIN , Caleb REESE , Anil K. SACHDEV
CPC分类号： H01M4/625 , H01M4/0404 , H01M4/661
摘要： 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
IPC分类号： H01M4/04 , H01M4/38 , H01M4/40 , H01M10/0525
CPC分类号： H01M4/0442 , H01M4/386 , H01M4/405 , H01M10/0525
摘要： 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：US20240234695A9
公开(公告)日：2024-07-11
申请号：US17971301
申请日：2022-10-21
CPC分类号： H01M4/366 , H01M4/0459 , H01M4/58 , H01M2004/021
摘要： An electroactive material for an electrochemical cell that cycles lithium ions is provided. The electroactive material includes a plurality of atomic layers and a plurality of cations disposed between the atomic layers. The plurality of atomic layers includes an atom selected from the group consisting of: silicon, germanium, boron, and combinations thereof. The plurality of cations is selected from the group consisting of: calcium, magnesium, zinc, copper, nickel, potassium, sodium, and combinations thereof. A ratio of the cations to atoms that define the atomic layer may be less than about 1:2.
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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
发明人： Yuntao GU , Jeffrey David CAIN , Sayed Youssef Sayed NAGY , Nicholas Paul William PIECZONKA , Thomas E. MOYLAN
CPC分类号： H01M4/386 , H01M4/366 , H01M2004/027
摘要： 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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公开(公告)号：US20240136507A1
公开(公告)日：2024-04-25
申请号：US17971301
申请日：2022-10-20
CPC分类号： H01M4/366 , H01M4/0459 , H01M4/58 , H01M2004/021
摘要： An electroactive material for an electrochemical cell that cycles lithium ions is provided. The electroactive material includes a plurality of atomic layers and a plurality of cations disposed between the atomic layers. The plurality of atomic layers includes an atom selected from the group consisting of: silicon, germanium, boron, and combinations thereof. The plurality of cations is selected from the group consisting of: calcium, magnesium, zinc, copper, nickel, potassium, sodium, and combinations thereof. A ratio of the cations to atoms that define the atomic layer may be less than about 1:2.
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