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    MIXED POSITIVE ELECTRODE MATERIAL, POSITIVE ELECTRODE PLATE AND PREPARATION METHOD THEREOF, BATTERY, AND APPARATUS
    35.
    发明申请
    MIXED POSITIVE ELECTRODE MATERIAL, POSITIVE ELECTRODE PLATE AND PREPARATION METHOD THEREOF, BATTERY, AND APPARATUS 有权

    公开(公告)号：US20220359874A1

    公开(公告)日：2022-11-10

    申请号：US17863295

    申请日：2022-07-12

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Changfeng BIE ,  Xia HU ,  Qian LIU ,  Na LIU ,  Xiaofu XU ,  Huan NI

    IPC: H01M4/58 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/36 ,  H01M4/04

    Abstract: This application provides a mixed positive electrode material, a positive electrode plate and a preparation method thereof, a battery, and an apparatus. The mixed positive electrode material includes a mixed component consisting of a material of lithium iron phosphate chemical system and a material of ternary chemical system, where the material of lithium iron phosphate chemical system is secondary particles with an average specific surface area within 10 m2/g. In the mixed positive electrode material of this application, the introduction of lithium iron phosphate secondary particles having a low specific surface area improves ease of processing of the mixed positive electrode material, making a slurry less prone to agglomeration and the two materials highly miscible. When the positive electrode plate is prepared by using the mixed positive electrode material of this application, uniform distribution of the positive electrode material on the positive electrode plate can be effectively improved.

    POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD AND USAGE THEREOF
    37.
    发明申请
    POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD AND USAGE THEREOF 有权

    公开(公告)号：US20220059837A1

    公开(公告)日：2022-02-24

    申请号：US17517958

    申请日：2021-11-03

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO. LIMITED

    Inventor： Chongheng SHEN ,  Rui DU ,  Yongchao LIU ,  Deyu ZHAO ,  Na LIU

    IPC: H01M4/525 ,  H01M4/505 ,  H01M4/36

    Abstract: This disclosure relates to the electrochemical field, and in particular, to a positive electrode material and a preparation method and usage thereof. The positive electrode material of this disclosure includes a substrate, where a general formula of the substrate is LixNiyCozMkMepOrAm, where 0.95≤x≤1.05, 0.5≤y≤1, 0≤z≤1, 0≤k≤1, 0≤p≤0.1, 1≤r≤5.2, 0≤m≤2, m+r≤2, M is selected from one or more of Mn and Al, Me is selected from one or more of Zr, Zn, Cu, Cr, Mg, Fe, V, Ti, Sr, Sb, Y, W, and Nb, and A is selected from one or more of N, F, S, and Cl; and an oxygen defect level of the positive electrode material satisfies at least one of condition (1) or condition (2): (1) 1.77≤OD1≤1.90; or (2) 0.69≤OD2≤0.74.

    POSITIVE ELECTRODE PLATE AND LITHIUM ION BATTERY
    38.
    发明申请
    POSITIVE ELECTRODE PLATE AND LITHIUM ION BATTERY 审中-公开

    公开(公告)号：US20200006767A1

    公开(公告)日：2020-01-02

    申请号：US16452684

    申请日：2019-06-26

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Rui DU ,  Na LIU ,  Chuanmiao YAN ,  Yongchao LIU

    IPC: H01M4/525 ,  H01M4/505 ,  H01M4/36 ,  H01M4/131 ,  H01M10/0525

    Abstract: Provided are a positive electrode plate and a lithium ion battery. The positive electrode plate includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer includes a first sub-layer as the outermost sub-layer of the positive active material layer, and a second sub-layer disposed between the positive electrode current collector and the first sub-layer. The first sub-layer includes a first positive electrode active material, the second sub-layer includes a second positive electrode active material. The first positive electrode active material is one or more of a ternary positive electrode material having a monocrystalline or quasi-monocrystalline structure, and a coating-modified material thereof. The present disclosure can improve energy density of the lithium ion battery and reduce gas production of the lithium ion battery, so that the lithium ion battery has high energy density and good storage performance at the same time.

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