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    Electrochemical device and electronic device containing same
    1.
    发明授权
    Electrochemical device and electronic device containing same 有权

    公开(公告)号：US12176488B2

    公开(公告)日：2024-12-24

    申请号：US17569307

    申请日：2022-01-05

    Applicant: Ningde Amperex Technology Limited

    Inventor： Junfei Liu ,  Shuirong Zhang ,  Chao Tang ,  Jianming Zheng

    IPC: H01M10/0567 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

    Abstract: An electrochemical device includes a positive electrode, a negative electrode, a separator located between the positive electrode and the negative electrode, and an electrolytic solution. The positive electrode includes a positive current collector and a positive active material layer disposed on the positive current collector. The positive active material layer includes a positive active material. The positive active material includes an element A. The element A is selected from at least one of Al, B, Ca, Mg, Ti, Cu, Nb, Si, Zr, Y, or W. The electrolytic solution includes at least one of 1,3-propane sultone or a derivative thereof. A mass ratio of the element A in the positive active material to 1,3-propane sultone or a derivative is 1:0.2 to 1:50.

    ELECTROLYTE AND LITHIUM-ION BATTERY
    5.
    发明申请
    ELECTROLYTE AND LITHIUM-ION BATTERY 审中-公开

    公开(公告)号：US20190173124A1

    公开(公告)日：2019-06-06

    申请号：US16167869

    申请日：2018-10-23

    Applicant: Ningde Amperex Technology Limited

    Inventor： Shuirong Zhang ,  Junfei Liu ,  Chao Tang ,  Juan Ma ,  Qunfeng Wang

    IPC: H01M10/0525 ,  H01M10/04 ,  H01M10/0567

    Abstract: Examples of the present application provide an electrolyte comprising a lithium salt, an organic solvent, and an additive, wherein the additive comprises a nitrile compound, a fluorophosphazene, and a fluoroether. By using the electrolyte comprising a nitrile compound, a fluorophosphazene, a fluoroether, the thermal stability of the electrolyte itself and the positive electrode material may be significantly improved through the synergistic effect of above three and the safety of the lithium-ion battery is greatly enhanced when the electrolyte is applied to the lithium-ion battery. In addition, by adding a cyclic carbonate with carbon-carbon double bond and fluorocyclic carbonate and by controlling the mass percentage of nitrile compound, fluorophosphazene, fluoroether in electrolyte, significant improvements in the safety of lithium-ion batteries may be achieved without significantly degrading the cycling performance of the lithium-ion battery.

    Electrolytic solution and electrochemical device using the same
    6.
    发明授权
    Electrolytic solution and electrochemical device using the same 有权

    公开(公告)号：US12159970B2

    公开(公告)日：2024-12-03

    申请号：US17362730

    申请日：2021-06-29

    Applicant: Ningde Amperex Technology Limited

    Inventor： Wenqiang Li ,  Juan Ma ,  Chao Tang ,  Junfei Liu

    IPC: H01M10/0567 ,  H01M10/0525

    Abstract: An electrolytic solution includes a compound containing a —CN functional group and a compound containing a silicon functional group. M is C or Si. R11, R12, and R13 are each independently selected from a substituted or non-substituted C1-C12 alkylene group, a substituted or non-substituted C2-C12 alkenylene group, an O—R group, an R0—S—R group or an R0—O—R group, R0 and R are each independently selected from a substituted or non-substituted C1-C6 alkylene group. n is 0 or 1. R14 is H, fluorine, a cyano group, a substituted or non-substituted C1-C12 alkyl group, a substituted or non-substituted C2-C12 alkenyl group, an O—R1 group, an R0—S—R1 group, or an R0—O—R1 group. R0 is a substituted or non-substituted C1-C6 alkylene group, and R1 is a substituted or non-substituted C1-C6 alkyl group.

    ELECTROLYTIC SOLUTION AND ELECTROCHEMICAL DEVICE USING THE SAME
    7.
    发明申请
    ELECTROLYTIC SOLUTION AND ELECTROCHEMICAL DEVICE USING THE SAME 有权

    公开(公告)号：US20220123363A1

    公开(公告)日：2022-04-21

    申请号：US17362730

    申请日：2021-06-29

    Applicant: Ningde Amperex Technology Limited

    Inventor： Wenqiang Li ,  Juan Ma ,  Chao Tang ,  Junfei Liu

    IPC: H01M10/0567 ,  H01M10/0525

    Abstract: An electrolytic solution includes a compound containing a —CN functional group and a compound containing a silicon functional group. M is C or Si. R11, R12, and R13 are each independently selected from a substituted or non-substituted C1-C12 alkylene group, a substituted or non-substituted C2-C12 alkenylene group, an O—R group, an R0—S—R group or an R0—O—R group, R0 and R are each independently selected from a substituted or non-substituted C1-C6 alkylene group. n is 0 or 1. R14 is H, fluorine, a cyano group, a substituted or non-substituted C1-C12 alkyl group, a substituted or non-substituted C2-C12 alkenyl group, an O—R1 group, an R0—S—R1 group, or an R0—O—R1 group. R0 is a substituted or non-substituted C1-C6 alkylene group, and R1 is a substituted or non-substituted C1-C6 alkyl group.

    Electrolyte and electrochemical device
    10.
    发明授权
    Electrolyte and electrochemical device 有权

    公开(公告)号：US11145901B2

    公开(公告)日：2021-10-12

    申请号：US16406943

    申请日：2019-05-08

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

    Inventor： Juan Ma ,  Shuirong Zhang ,  Junfei Liu ,  Chao Tang

    IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569

    Abstract: The present application relates to an electrolyte and an electrochemical device. The electrolyte includes an organic solvent, an additive and a lithium salt, the additive including a cyclic borate and a nitrile compound. The electrolyte of the present application has good stability at a high working voltage. In another embodiment of the present application, the combination of the electrolyte and an anode having a high compacted density provides a high energy density for the electrochemical device, and improves the storage, floating charge and dynamicperformance of the electrochemical device.

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