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    Method for the Manufacture of Lithium Metal Oxides and Phosphates
    3.
    发明公开
    Method for the Manufacture of Lithium Metal Oxides and Phosphates 审中-公开

    公开(公告)号：US20230331570A1

    公开(公告)日：2023-10-19

    申请号：US18300365

    申请日：2023-04-13

    申请人： Sylvatex, Inc.

    发明人： Yi-Ting Chen ,  Yanying Lu ,  Valeria Miramontes ,  Edward Stafford ,  Daniel Teav Sun ,  Ahmad Dehestani ,  Melvin Louis Luetkens, JR.

    IPC分类号： C01D15/00

    CPC分类号： C01D15/00

    摘要： A method of producing a particulate lithium metal oxide or lithium metal phosphate material comprising the steps of providing one or more metal compounds, adding sufficient water to dissolve the one or more metal compounds to form a metal compound solution, adding a first basic solution, a second basic solution and the metal compound solution at predetermined rates to a reaction vessel containing water to form a reaction mixture, heating the reaction mixture while maintaining a pH of the reaction mixture in a predetermined pH range, adding a lithium compound, adding a fatty acid, filtering a precipitate, washing and preferably drying the precipitate, calcining the dried precipitate in an atmosphere containing oxygen to form a calcined lithium metal oxide or lithium metal phosphate, cooling and sizing the calcined lithium metal oxide or lithium metal phosphate to produce a particulate lithium metal oxide or lithium metal phosphate material having a predetermined average particle size.

    LITHIUM SULFIDE PRODUCTION METHOD
    5.
    发明公开
    LITHIUM SULFIDE PRODUCTION METHOD 审中-公开

    公开(公告)号：US20230150828A1

    公开(公告)日：2023-05-18

    申请号：US17988665

    申请日：2022-11-16

    申请人： Solid Power Operating, Inc.

    发明人： Brian E. FRANCISCO ,  Samuel Oberwetter ,  Sean P. Culver ,  Ilya Lisenker

    IPC分类号： C01D15/00

    CPC分类号： C01D15/00 ,  C01P2002/72 ,  C01P2006/80

    摘要： A process for producing a low-cost water-reactive sulfide material includes reacting a substantially anhydrous first alkali metal salt, a substantially anhydrous first sulfide compound, and a substantially anhydrous first alkali metal hydrosulfide compound in a substantially anhydrous polar solvent, providing differential solubility for a substantially high solubility second sulfide and a substantially low solubility second alkali metal salt, and forming a mixture of the high solubility second sulfide, a second alkali metal hydrosulfide, and the low solubility second alkali metal salt; removing the low solubility second alkali metal salt to isolate the supernatant including the second sulfide, and separating the polar solvent from the second sulfide and the second alkali metal hydrosulfide followed by heating to produce the second sulfide. The present disclosure provides a scalable process for production of a high purity alkali metal sulfide that is essentially free of undesired contaminants.

    Method for preparing lithium bis(fluorosulfonyl)imide salt
    6.
    发明授权
    Method for preparing lithium bis(fluorosulfonyl)imide salt 有权

    公开(公告)号：US11618687B2

    公开(公告)日：2023-04-04

    申请号：US16955270

    申请日：2019-04-09

    申请人： LG Chem, Ltd.

    发明人： Byung Soo Kang ,  Hyun Jik Lee ,  Won Jae Lee ,  Chui Haeng Lee ,  Young Min Lim

    IPC分类号： C01D15/00

    摘要： The present invention relates to a method for preparing a lithium bis(fluorosulfonyl)imide salt, including a step of dissolving bis(chlorosulfonyl)imide in an organic solvent in a non-glass vessel to prepare a first reaction solution; a step of injecting lithium fluoride (LiF) to the first reaction solution in the non-glass vessel and refluxing while heating to prepare a second reaction solution; a step of separating a product including a lithium bis(fluorosulfonyl)imide salt and the organic solvent from the second reaction solution; and a step of obtaining the lithium bis(fluorosulfonyl)imide salt in a solid phase from the product, wherein the organic solvent is at least one or more selected from the group consisting of ethyl acetate, butyl acetate, chloroform, dichloromethane, dichloroethane, benzene, xylene and acetonitrile.