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    POROUS, AMORPHOUS LITHIUM STORAGE MATERIALS AND A METHOD FOR MAKING THE SAME
    32.
    发明申请
    POROUS, AMORPHOUS LITHIUM STORAGE MATERIALS AND A METHOD FOR MAKING THE SAME 有权
    多孔非晶锂储存材料及其制造方法

    公开(公告)号：US20140272578A1

    公开(公告)日：2014-09-18

    申请号：US13837898

    申请日：2013-03-15

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Xingcheng Xiao ,  Anil K. Sachdev ,  Mark W. Verbrugge

    IPC: H01M4/38 ,  C01B33/021

    CPC classification number: H01M4/386 ,  C01B33/021 ,  H01M4/134 ,  H01M4/1395 ,  H01M10/052 ,  H01M2004/021 ,  Y02E60/122 ,  Y02P70/54

    Abstract: Porous, amorphous lithium storage materials and a method for making these materials are disclosed herein. In an example of the method, composite particles of a lithium storage material in an amorphous phase and a material that is immiscible with the lithium storage material are prepared. Phase separation is induced within the composite particles to precipitate out the amorphous phase lithium storage material and form phase separated composite particles. The immiscible material is chemically etched from the phase separated composite particles to form porous, amorphous lithium storage material particles.

    Abstract translation: 本文公开了多孔非晶锂储存材料及其制备方法。 在该方法的一个实例中，制备非晶相中的锂储存材料的复合颗粒和与锂储存材料不混溶的材料。 在复合颗粒内诱发相分离，沉淀出非晶相锂储存材料并形成相分离的复合颗粒。 从相分离的复合颗粒化学蚀刻不混溶的材料，以形成多孔的无定形锂储存材料颗粒。

    ULTRATHIN SURFACE COATING ON NEGATIVE ELECTRODES TO PREVENT TRANSITION METAL DEPOSITION AND METHODS FOR MAKING AND USE THEREOF
    33.
    发明申请
    ULTRATHIN SURFACE COATING ON NEGATIVE ELECTRODES TO PREVENT TRANSITION METAL DEPOSITION AND METHODS FOR MAKING AND USE THEREOF 有权
    用于防止过渡金属沉积的负极电极上的超表面涂层及其制造和使用方法

    公开(公告)号：US20140205905A1

    公开(公告)日：2014-07-24

    申请号：US13745039

    申请日：2013-01-18

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Xingcheng Xiao ,  Junghyun Kim ,  Zhongyi Liu

    IPC: H01M4/131

    CPC classification number: H01M4/049 ,  C23C16/303 ,  C23C16/403 ,  H01M4/133 ,  H01M4/134 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  Y02E60/122

    Abstract: An electrode material for use in an electrochemical cell, like a lithium-ion battery, is provided. The electrode material may be a negative electrode comprising graphite, silicon, silicon-alloys, or tin-alloys, for example. By avoiding deposition of transition metals, the battery substantially avoids charge capacity fade during operation. The surface coating is particularly useful with negative electrodes to minimize or prevent deposition of transition metals thereon in the electrochemical cell. The coating has a thickness of less than or equal to about 40 nm. Methods for making such materials and using such coatings to minimize transition metal deposition in electrochemical cells are likewise provided.

    Abstract translation: 提供了一种用于电化学电池的电极材料，如锂离子电池。 电极材料可以是例如包含石墨，硅，硅合金或锡合金的负极。 通过避免过渡金属的沉积，电池基本上避免了操作期间的充电容量衰减。 表面涂层对于负电极特别有用，以最小化或防止过渡金属在电化学电池中的沉积。 该涂层具有小于或等于约40nm的厚度。 同样提供制造这种材料并使用这种涂层以最小化电化学电池中的过渡金属沉积的方法。

    Thermal barrier component for mitigating thermal runaway in batteries
    37.
    发明授权
    Thermal barrier component for mitigating thermal runaway in batteries 有权

    公开(公告)号：US12062770B2

    公开(公告)日：2024-08-13

    申请号：US17480085

    申请日：2021-09-20

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Xingcheng Xiao ,  Mei Cai ,  Wei Zeng ,  Aijie Chen

    IPC: H01M10/658 ,  H01M50/293

    CPC classification number: H01M10/658 ,  H01M50/293

    Abstract: A thermal barrier component for an electrochemical cell (e.g., a battery) includes a mat, a functional material, and a polymer binder. The mat includes a porous matrix. The functional material is in pores of the porous matrix. The functional material includes an oxide. In certain aspects, the functional material may be a composite material. The polymer binder is in contact with the porous matrix and the functional material. At least one of the porous matrix, the functional material, and the polymer binder is configured to serve as an intumescent carbon source. The oxide is configured to catalyze thermal degradation of the intumescent carbon source to form intumescent carbon at a first temperature. The first temperature is greater than or equal to about 300° C. The thermal barrier component is configured to mitigate thermal runaway in an electrochemical cell. The thermal barrier component may include one or more layers.

    Electroactive particles having electronically conductive coatings
    39.
    发明授权
    Electroactive particles having electronically conductive coatings 有权

    公开(公告)号：US12009503B2

    公开(公告)日：2024-06-11

    申请号：US17039034

    申请日：2020-09-30

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Mark W. Verbrugge ,  Xingcheng Xiao ,  Qinglin Zhang ,  Xingyi Yang ,  Raghunathan K

    IPC: H01M4/1395 ,  H01M4/04 ,  H01M4/134

    CPC classification number: H01M4/1395 ,  H01M4/0452 ,  H01M4/134

    Abstract: The present disclosure relates to a negative electrode material and methods of preparation and use relating thereto. The electrode material comprises a plurality of electroactive material particles, where each electroactive material particle includes an electroactive material core and an electronically conductive coating. The method includes contacting an electroactive material precursor including a plurality of electroactive material particles with a solution so as to form an electronically conductive coating on each of the electroactive material particles. The solution includes a solvent and one or more of copper fluoride (CuF2), titanium tetrafluoride (TiF3 or TiF4), iron fluoride (FeF3), nickel fluoride (NiF2), manganese fluoride (MnF2, MnF3, or MnF4), and vanadium fluoride (VF3, VF4, VF5). The electronically conductive coating includes a plurality of first regions and a plurality of second regions. The plurality of first regions include lithium fluoride. The plurality of second regions include one of copper, titanium, iron, nickel, manganese, and vanadium.

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