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    Electrode and lithium-ion battery
    2.
    发明授权
    Electrode and lithium-ion battery 有权

    公开(公告)号：US10693181B2

    公开(公告)日：2020-06-23

    申请号：US16000597

    申请日：2018-06-05

    Applicant: Ningde Amperex Technology Limited

    Inventor： Chaowang Lin ,  Fan Yang ,  Yisong Su ,  Huawei Zhong ,  Changming Qu ,  Xiaozhen Zhang

    IPC: H01M4/02 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/38 ,  H01M4/50 ,  H01M4/52 ,  H01M4/583 ,  H01M4/62 ,  H01M4/66

    Abstract: The present application provides an electrode and a lithium-ion battery. The electrode comprises: a current collector; a first active material layer comprising a first active material; and a second active material layer comprising a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on at least one surface of the current collector, and a ratio of an average particle size of the second active material to an average particle size of the first active material is from 1:1 to 40:1. The active material layer is used in the present application to ensure that the lithium-ion battery does not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the lithium-ion battery.

    ELECTRODE AND LITHIUM-ION BATTERY
    3.
    发明申请
    ELECTRODE AND LITHIUM-ION BATTERY 审中-公开

    公开(公告)号：US20190267664A1

    公开(公告)日：2019-08-29

    申请号：US16000597

    申请日：2018-06-05

    Applicant: Ningde Amperex Technology Limited

    Inventor： Chaowang Lin ,  Fan Yang ,  Yisong Su ,  Huawei Zhong ,  Changming Qu ,  Xiaozhen Zhang

    IPC: H01M10/0525 ,  H01M4/583 ,  H01M4/62 ,  H01M4/38 ,  H01M4/66 ,  H01M4/52 ,  H01M4/50 ,  H01M4/36

    Abstract: The present application provides an electrode and a lithium-ion battery. The electrode comprises: a current collector; a first active material layer comprising a first active material; and a second active material layer comprising a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on at least one surface of the current collector, and a ratio of an average particle size of the second active material to an average particle size of the first active material is from 1:1 to 40:1. The active material layer is used in the present application to ensure that the lithium-ion battery does not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the lithium-ion battery.

    ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE COMPRISING SAME
    5.
    发明申请
    ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE COMPRISING SAME 有权

    公开(公告)号：US20230058850A1

    公开(公告)日：2023-02-23

    申请号：US17909075

    申请日：2020-03-04

    Applicant: Ningde Amperex Technology Limited ,  Dongguan Amperex Technology Limited

    Inventor： Huawei Zhong

    IPC: H01M50/46 ,  H01M10/0525 ,  H01M4/583 ,  H01M4/62

    Abstract: This application relates to an electrochemical device and an electronic device containing same. The electrochemical device includes: a positive electrode, a negative electrode, a separator, an adhesive layer, and a lithium compound layer. The negative electrode includes a negative active material layer. The separator is disposed between the positive electrode and the negative electrode. The adhesive layer is disposed between the negative active material layer and the separator. The lithium compound layer is disposed between the adhesive layer and the negative active material layer. The lithium compound layer includes at least one of lithium carbonate or lithium oxide. In this application, the adhesive layer is disposed between the separator and the negative electrode to effectively enhance the adhesive ability of the negative electrode to the separator after a lithium supplement process, alleviate deformation of the negative electrode due to volume expansion during charge-and-discharge cycles, and avoid detachment from the separator.

    Electrode electrochemical device and electronic device
    7.
    发明授权
    Electrode electrochemical device and electronic device 有权

    公开(公告)号：US11322774B2

    公开(公告)日：2022-05-03

    申请号：US16868966

    申请日：2020-05-07

    Applicant: Ningde Amperex Technology Limited

    Inventor： Chaowang Lin ,  Fan Yang ,  YiSong Su ,  Huawei Zhong ,  Changming Qu ,  Xiaozhen Zhang

    IPC: H01M4/02 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/38 ,  H01M4/50 ,  H01M4/52 ,  H01M4/583 ,  H01M4/62 ,  H01M4/66

    Abstract: The present application provides an electrode, an electrochemical device, and an electronic device. The electrode includes: a current collector; a first active material layer including a first active material; and a second active material layer including a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on a surface of the current collector, and a particle size of 90% accumulative volume of the first active material is less than 40 μm. The active material layer is used in the present application to ensure that the electrochemical device and the electronic device do not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the electrochemical device and the electronic device.

    Cathode, electrochemical device and electronic device including the same
    8.
    发明授权
    Cathode, electrochemical device and electronic device including the same 有权

    公开(公告)号：US12255311B2

    公开(公告)日：2025-03-18

    申请号：US17476896

    申请日：2021-09-16

    Applicant: Ningde Amperex Technology Limited

    Inventor： Huawei Zhong ,  Chaowang Lin ,  Fan Yang ,  Yisong Su

    IPC: H01M4/139 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

    Abstract: An electrochemical device includes a cathode including a cathode current collector, a first cathode active material layer including a first cathode active material, and a second cathode active material layer including a second cathode active material. The first cathode active material layer is disposed between the cathode current collector and the second cathode active material layer, and the first cathode active material layer is formed on at least one surface of the cathode current collector. The first cathode active material layer is firstly formed on the cathode current collector, and the second cathode active material layer is secondly formed on the first cathode active material layer, then the second cathode active material layer and the first cathode active material layer are pressed together.

    Cathode, electrochemical device and electronic device comprising the same
    9.
    发明授权
    Cathode, electrochemical device and electronic device comprising the same 有权

    公开(公告)号：US11177469B2

    公开(公告)日：2021-11-16

    申请号：US16416489

    申请日：2019-05-20

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

    Inventor： Huawei Zhong ,  Chaowang Lin ,  Fan Yang ,  Yisong Su

    IPC: H01M4/139 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

    Abstract: The present application relates to a cathode, an electrochemical device and an electronic device comprising the same. The cathode comprises: a cathode current collector; a first cathode active material layer, comprising a first cathode active material; and a second cathode active material layer, comprising a second cathode active material, wherein the first cathode active material layer is disposed between the cathode current collector and the second cathode active material layer, and the first cathode active material layer is formed on at least one surface of the cathode current collector; and wherein the second cathode active material is embedded in the first cathode active material layer and forms a continuous transition layer with the first cathode active material at an interface between the first cathode active material layer and the second cathode active material layer. The technique of firstly coating two active material layers and then performing cold pressing together is adopted to lower the probability of separation of the first cathode active material layer and the second cathode active material layer, thereby enhancing the safety performance of the electrochemical device.

    ELECTRODE ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE
    10.
    发明申请
    ELECTRODE ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20200266483A1

    公开(公告)日：2020-08-20

    申请号：US16868966

    申请日：2020-05-07

    Applicant: Ningde Amperex Technology Limited

    Inventor： Chaowang Lin ,  Fan Yang ,  YiSong Su ,  Huawei Zhong ,  Changming Qu ,  Xiaozhen Zhang

    IPC: H01M10/0525 ,  H01M4/66 ,  H01M4/62 ,  H01M4/583 ,  H01M4/52 ,  H01M4/50 ,  H01M4/38 ,  H01M4/36

    Abstract: The present application provides an electrode, an electrochemical device, and an electronic device. The electrode includes: a current collector; a first active material layer including a first active material; and a second active material layer including a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on a surface of the current collector, and a particle size of 90% accumulative volume of the first active material is less than 40 μm. The active material layer is used in the present application to ensure that the electrochemical device and the electronic device do not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the electrochemical device and the electronic device.

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