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    Membrane-based alkali metal extraction system
    2.
    发明授权
    Membrane-based alkali metal extraction system 有权

    公开(公告)号：US12012664B1

    公开(公告)日：2024-06-18

    申请号：US18122581

    申请日：2023-03-16

    Applicant: Lyten, Inc.

    Inventor： Jesse Baucom ,  Sanjeev Kolli

    IPC: C25C1/00 ,  B01D61/46 ,  C25C1/02 ,  C25C7/02 ,  C25C7/04

    CPC classification number: C25C1/02 ,  B01D61/46 ,  C25C7/02 ,  C25C7/04 ,  B01D2313/345

    Abstract: The presently disclosed concepts relate to improved techniques for critical mineral extraction, purification, precipitation, ion exchange, and metal production using a solid electrolyte membrane. By using a solid electrolyte embedded in a matrix, alkali metal (such as lithium) can be more effectively separated from feed solutions. Additionally, energy used to initially extract critical minerals from a feed solution may be stored as electrochemical energy, which in turn, may be discharged when critical minerals are depleted from the electrode. This discharged energy may therefore be reclaimed and reused to extract additional critical minerals.

    HIGH-SELECTIVITY HYDROPHILIC ELECTRODE FOR EXTRACTING LITHIUM AND PREPARATION METHOD THEREOF
    3.
    发明公开
    HIGH-SELECTIVITY HYDROPHILIC ELECTRODE FOR EXTRACTING LITHIUM AND PREPARATION METHOD THEREOF 审中-公开

    公开(公告)号：US20240167182A1

    公开(公告)日：2024-05-23

    申请号：US17783210

    申请日：2022-04-21

    Applicant: CENTRAL SOUTH UNIVERSITY

    Inventor： Zhongwei ZHAO ,  Lihua HE ,  Wenhua XU

    IPC: C25C7/02 ,  C25C1/02

    CPC classification number: C25C7/02 ,  C25C1/02

    Abstract: The present disclosure relates to a high-selectivity hydrophilic electrode for electrochemically extracting lithium and a preparation method thereof. The preparation method includes the step of carrying out surface coating modification on an electrode active material by using polydopamine. The interception of impurity ions is achieved by utilizing the advantages, which polydopamine has, of preferentially accumulating and transporting lithium ions, thereby improving the selectivity of the electrode active material on lithium. In the pulping process of an electrode adsorption material, a hydroxyl-containing polar hydrophilic organic polymer compound is introduced to perform blending modification, thereby improving the hydrophilicity of a binder polyvinylidene fluoride (PVDF). In addition, pore formation via inorganic salts is combined with a drying mode of “low temperature-high temperature” so that the “porous-microcrack” morphology is formed on the electrode, thereby improving the mass transfer effect of the solution inside the electrode. The preparation method of the electrode disclosed by the present disclosure has the characteristics of simplicity, practicability, environmental friendliness, low cost and the like, and is easy for industrial production.

    Lanthanide electrochemistry
    6.
    发明授权
    Lanthanide electrochemistry 有权

    公开(公告)号：US11920249B2

    公开(公告)日：2024-03-05

    申请号：US16244897

    申请日：2019-01-10

    Applicant: Johna L. Leddy

    Inventor： Johna Leddy ,  Krysti L. Knoche

    IPC: C25C1/22 ,  B01J19/08 ,  C25B1/00 ,  C25B9/19 ,  C25C7/02 ,  C25D3/54 ,  H01M4/92 ,  H01M8/10 ,  H01M8/1016 ,  H01M12/06 ,  H01M12/08

    CPC classification number: C25C1/22 ,  B01J19/087 ,  C25B1/00 ,  C25B9/19 ,  C25C7/02 ,  C25D3/54 ,  H01M8/1016 ,  H01M12/06 ,  H01M12/08 ,  H01M4/92 ,  H01M2008/1095 ,  Y02E60/10

    Abstract: Electrochemically reacting a lanthanide or actinide in solvent at a working electrode; wherein the solvent comprises an organic solvent such as acetonitrile which have a dielectric constant of at least three; wherein the solvent system further comprises an electrolyte; wherein the working electrode comprises an ionically conducting or permeable film such as a fluorosulfonate film; wherein at least one ligand such as triflate distinct from the ionically conducting or permeable film is present; wherein the ligand is chemically similar to a structure in the ionically conducting or ionically permeable film; and optionally wherein the electrochemical oxidation or reduction is carried out under the influence of a magnetic field which favorably enhances the reaction. Improved electrochemical methods, identification, and separation can be achieved. Also, an electrochemical device, wherein the device is adapted to employ the oxygen reduction reaction (ORR) at the cathode, wherein the cathode is magnetically modified, or the electrolyte comprises at least one lanthanide or actinide, or both.

    APPARATUS FOR ELECTRO-CHEMICAL EXTRACTION OF ELEMENTAL LEAD FROM DROSS
    10.
    发明公开
    APPARATUS FOR ELECTRO-CHEMICAL EXTRACTION OF ELEMENTAL LEAD FROM DROSS 审中-公开

    公开(公告)号：US20230374684A1

    公开(公告)日：2023-11-23

    申请号：US17886924

    申请日：2022-08-12

    Applicant: VERDEEN CHEMICALS INC.

    Inventor： Vipin Tyagi ,  Amol Harishchandra Naik ,  Nishchay Chadha

    IPC: C25C1/18 ,  C25C7/06 ,  C25C7/02

    CPC classification number: C25C1/18 ,  C25C7/06 ,  C25C7/02

    Abstract: Disclosed are solutions for the recovery of elemental metals from dross at industrial scales without smelting including, for example, the recovery of near-pure lead from dross resulting from recycled LABs whether by smelting, electrolytic processing, or some other process. Further disclosed are new processes, innovative electrolyzer designs, and/or novel utilization of supplemental chemicals necessary for successful electrolysis of pure metal from impure forms (e.g., pure lead from lead monoxide) found in dross, and especially applicable for solid-state electrolysis of mixtures comprising lead dross paste, electrolyte, and supplemental chemicals. Solid-state electrolysis of mixtures comprising impure lead dross (e.g., dross paste) is made possible by electrolytic processing using supplemental chemicals, and made scalable to industrial levels via utilization of a horizontal cathode in the electrolyzer.

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