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    NEGATIVE ELECTRODES FOR SECONDARY LITHIUM BATTERIES AND METHODS OF MAKING THE SAME
    5.
    发明申请
    NEGATIVE ELECTRODES FOR SECONDARY LITHIUM BATTERIES AND METHODS OF MAKING THE SAME 有权

    公开(公告)号：US20220302459A1

    公开(公告)日：2022-09-22

    申请号：US17205574

    申请日：2021-03-18

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Xingyi Yang ,  Xingcheng Xiao ,  Joel G. Toner

    IPC: H01M4/66 ,  H01M10/052 ,  H01M10/058 ,  H01M10/44 ,  H01M4/04 ,  H01M4/139 ,  H01M4/38

    Abstract: A negative electrode for a secondary lithium battery is provided herein, as well as a method for assembling a secondary lithium battery including the negative electrode. The negative electrode includes a current collector having a first side and an opposite second side. A first negative electrode layer is disposed on the first side of the current collector and a second negative electrode layer is disposed on the second side of the current collector. A lithium metal layer is disposed (i) between the first and second negative electrode layers or (ii) on a major facing surface of the first or second negative electrode layer. An electrolyte infiltrates the first and second negative electrode layers and is in contact with the lithium metal layer. The electrolyte establishes a lithium ion transport path between the lithium metal layer and at least one of the first or second negative electrode layers.

    Electroactive particles having electronically conductive coatings
    8.
    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.

    POSITIVE ELECTRODE INCLUDING DISCRETE ALUMINUM OXIDE NANOMATERIALS AND METHOD FOR FORMING ALUMINUM OXIDE NANOMATERIALS
    10.
    发明申请
    POSITIVE ELECTRODE INCLUDING DISCRETE ALUMINUM OXIDE NANOMATERIALS AND METHOD FOR FORMING ALUMINUM OXIDE NANOMATERIALS 审中-公开
    包含分离的氧化铝纳米颗粒的正极和其形成氧化铝纳米材料的方法

    公开(公告)号：US20170077520A1

    公开(公告)日：2017-03-16

    申请号：US14855142

    申请日：2015-09-15

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Yan Wu ,  Zhongyi Liu ,  Xiaosong Huang ,  Xingyi Yang

    IPC: H01M4/62 ,  C01F7/02 ,  H01M2/16 ,  H01M4/485 ,  H01M4/04

    CPC classification number: H01M4/628 ,  C01F7/34 ,  C01F7/441 ,  C01P2004/04 ,  C01P2004/13 ,  C01P2004/16 ,  C01P2006/12 ,  H01M4/0404 ,  H01M4/13 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/621 ,  H01M4/625 ,  H01M10/0525 ,  H01M10/4235 ,  H01M2004/028

    Abstract: A positive electrode includes a lithium-based active material, a binder, a conductive filler, and discrete aluminum oxide nanomaterials. The aluminum oxide nanomaterials are mixed, as an additive, throughout the positive electrode with the lithium-based active material, the binder, and the conductive filler. The positive electrode with the discrete aluminum oxide nanomaterials may be incorporated into a lithium ion battery. The aluminum oxide nanomaterials may be formed by the following method. A solution is formed by mixing an aluminum oxide precursor and an acid. A carbon material is added to the solution, thereby forming an aqueous mixture having the carbon material therein. Hydrothermal synthesis is performed using the aqueous mixture, and precursor nanostructures are grown on the carbon material. The precursor nanostructures on the carbon material are annealed so that the carbon material is removed and aluminum oxide nanomaterials are formed.

    Abstract translation: 正极包括锂基活性材料，粘合剂，导电填料和离散的氧化铝纳米材料。 氧化铝纳米材料作为添加剂以整个正极与锂基活性材料，粘合剂和导电填料混合。 具有离散氧化铝纳米材料的正极可以并入锂离子电池中。 氧化铝纳米材料可以通过以下方法形成。 通过混合氧化铝前体和酸形成溶液。 向该溶液中加入碳材料，由此形成其中含有碳材料的水性混合物。 使用含水混合物进行水热合成，并在碳材料上生长前体纳米结构。 将碳材料上的前体纳米结构退火，以除去碳材料并形成氧化铝纳米材料。

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