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

    公开(公告)号：US20210135206A1

    公开(公告)日：2021-05-06

    申请号：US17142963

    申请日：2021-01-06

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

    Inventor： Xinru Su ,  Baozhang Li ,  Yisong Su ,  Zhiwen Xiao

    IPC: H01M4/36 ,  H01M4/131 ,  H01M4/136 ,  H01M4/525 ,  H01M4/58 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525

    Abstract: An electrochemical device includes a cathode current collector, a first cathode active material layer, a second cathode active material layer and an insulating layer. The first cathode active material layer covers a first portion of a first surface of the cathode current collector, and the insulating layer covers a second portion of the first surface of the cathode current collector that is different from the first portion. A first distance exists between the insulating layer and the first cathode active material layer in a longitudinal direction of the cathode current collector. By providing a gap between the active material layer in a two-layer structure and the insulating layer in the cathode, thereby ensuring the mechanical safety performance of the electrochemical device.

    Cathode, electrochemical device and electronic device including the same
    6.
    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
    8.
    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 and electrochemical device
    9.
    发明授权
    Electrode and electrochemical device 有权

    公开(公告)号：US10950854B2

    公开(公告)日：2021-03-16

    申请号：US16174329

    申请日：2018-10-30

    Applicant: Ningde Amperex Technology Limited

    Inventor： Wei Cui ,  Chaowang Lin ,  Changchuan Shi ,  Yisong Su

    IPC: H01M10/0525 ,  H01M4/48 ,  H01M4/66

    Abstract: The present application provides an electrode and an electrochemical device comprising the electrode. The electrode comprises a current collector; and an inorganic layer arranged on a surface of the current collector, wherein the inorganic layer comprises a metal oxide and does not comprise a polymer. The electrode of the lithium ion battery provided by the present application has little influence on the volume energy density of the lithium ion battery while improving the safety performance of the lithium ion battery.

    POSITIVE ELECTRODE AND LITHIUM-ION BATTERY
    10.
    发明申请
    POSITIVE ELECTRODE AND LITHIUM-ION BATTERY 审中-公开

    公开(公告)号：US20190267612A1

    公开(公告)日：2019-08-29

    申请号：US16170020

    申请日：2018-10-24

    Applicant: Ningde Amperex Technology Limited

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

    IPC: H01M4/131 ,  H01M4/133 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  C01G45/12

    Abstract: The present application provides a positive electrode and a lithium-ion battery. The positive electrode comprises a current collector; a first active material layer comprising a first active material; and a second active material layer; wherein the first active material layer is arranged between the current collector and the second active material layer, the first active material layer comprises a first active material, and the first active material is at least one selected from a group consisting of a modified lithium transition metal oxide positive electrode material and a modified lithium iron phosphate. The positive electrode of the present application helps to improve the thermal stability of the lithium-ion battery, and the improvement of the thermal stability may reduce the proportion of the thermal runaway when the lithium-ion battery is internally short-circuited so that the safety performance of the lithium-ion battery is improved.

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