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    ELECTROLYTIC SOLUTION, ELECTROCHEMICAL DEVICE, AND ELECTRONIC DEVICE
    1.
    发明公开
    ELECTROLYTIC SOLUTION, ELECTROCHEMICAL DEVICE, AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20230231196A1

    公开(公告)日：2023-07-20

    申请号：US18098604

    申请日：2023-01-18

    Applicant: Ningde Amperex Technology Limited

    Inventor： Xiexue PENG ,  Chao TANG

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

    CPC classification number: H01M10/0567 ,  H01M10/0568 ,  H01M10/0525

    Abstract: An electrolytic solution includes a compound represented by Formula I-A and a compound represented by Formula II-A. In Formula I-A, A11, A12, and A13 are each independently selected from Formula (I-A1) and Formula (I-A2). In Formula I-A, n is a positive integer from 1 to 8. When n>1, the plurality of A11 structures are identical or different. At least two of the A11, A12, or A13 are selected from I-A2. In Formula II-A, Q is independently selected from Formula (II-A1) and Formula (II-A2). In Formula II-A, m is 1 or 2. R11, R12, R13, R21, R22, and R23 are each independently selected from a covalent single bond, a substituted or unsubstituted C1 to C10 alkylidene and heterocyclyl, a substituted or unsubstituted C2 to C10 alkenyl and alkynyl, a substituted or unsubstituted C6 to C10 aryl, a substituted or unsubstituted C3 to C10 alicyclic hydrocarbyl, and a substituted or unsubstituted heteroatom-containing functional group, in which a substituent for substitution is halogen.

    ELECTROLYTE SOLUTION AND ELECTROCHEMICAL DEVICE
    2.
    发明申请
    ELECTROLYTE SOLUTION AND ELECTROCHEMICAL DEVICE 有权

    公开(公告)号：US20250105356A1

    公开(公告)日：2025-03-27

    申请号：US18975212

    申请日：2024-12-10

    Applicant: Ningde Amperex Technology Limited

    Inventor： Xiexue PENG ,  Junhua JIAN ,  Chao TANG

    IPC: H01M10/0567 ,  C07C255/05 ,  H01M10/0525

    Abstract: An electrolyte solution includes a compound represented by Formula I: where m, n, k, and x are each independently selected from 1, 2, or 3; R11 and R12 are each independently selected from hydrogen, halogen, substituted or unsubstituted C1 to C3 alkyl, substituted or unsubstituted C2 to C4 alkenyl, substituted or unsubstituted C2 to C4 alkynyl, or substituted or unsubstituted C6 to C10 aryl, wherein when substituted, a substituent is independently selected from halogen. The multi-cyano (—CN) compound represented by Formula I is introduced into the electrolyte solution, so that the multi-cyano group can stabilize a transition metal in a positive active material and protect a positive electrode interface. The compound represented by Formula I can also be reduced at a negative electrode to protect a negative electrode interface and play a role in suppressing continuous decomposition of the electrolyte solution and suppressing gas production.

    ELECTROCHEMICAL DEVICE AND ELECTRIC APPLIANCE COMPRISING SAME
    6.
    发明申请
    ELECTROCHEMICAL DEVICE AND ELECTRIC APPLIANCE COMPRISING SAME 有权

    公开(公告)号：US20250023102A1

    公开(公告)日：2025-01-16

    申请号：US18901349

    申请日：2024-09-30

    Applicant: Ningde Amperex Technology Limited

    Inventor： Junfei LIU ,  Disheng LAN ,  Chao TANG ,  Xiexue PENG

    IPC: H01M10/0567 ,  H01M4/02 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0569

    Abstract: An electrolyte includes fluoroethylene carbonate, where a percentage a of the fluoroethylene carbonate is 0.01% to 5% based on mass of the electrolyte; the positive electrode includes a positive electrode active material, where the positive electrode active material contains element Mn, and a percentage of the element Mn is greater than or equal to 15% based on mass of the positive electrode active material; and the positive electrode active material has a unit reaction area c measured in m2/cm2, where a and c satisfy the following relationship: 0.0006≤a/c≤6.25, and the unit reaction area is a product of a weight W of the positive electrode active material per unit area and a specific surface area BET of the positive electrode active material.

    ELECTROLYTE, ELECTROCHEMICAL DEVICE, AND ELECTRONIC DEVICE
    8.
    发明申请
    ELECTROLYTE, ELECTROCHEMICAL DEVICE, AND ELECTRONIC DEVICE 有权

    公开(公告)号：US20220223914A1

    公开(公告)日：2022-07-14

    申请号：US17708617

    申请日：2022-03-30

    Applicant: Ningde Amperex Technology Limited

    Inventor： Xiexue PENG ,  Jianming ZHENG ,  Chao TANG

    IPC: H01M10/0567

    Abstract: An electrolyte includes a compound represented by formula I-A, where A1, A2, and A3 are each independently selected from formula I-B or formula I-C, and at least two of A1, A2, and A3 are formula I-C. In formula I-A, n is selected from integers 1 to 10, and m is selected from 0 or 1. In formula I-B and formula I-C, represents a site at which two adjacent atoms are joined. The electrolyte can significantly improve high-temperature storage performance, cycle performance, and floating charge performance of the electrochemical device.

    ELECTROLYTIC SOLUTION AND ELECTROCHEMICAL DEVICE USING THE SAME
    9.
    发明申请
    ELECTROLYTIC SOLUTION AND ELECTROCHEMICAL DEVICE USING THE SAME 有权

    公开(公告)号：US20210408604A1

    公开(公告)日：2021-12-30

    申请号：US16652593

    申请日：2020-03-30

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

    Inventor： Qian WEN ,  Bin WANG ,  Xiexue PENG ,  Jianming ZHENG

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

    Abstract: The present application relates to an electrolytic solution and an electrochemical device using the same. The electrolytic solution comprises a cyclic fluorocarbonate, a chain fluorocarbonate and a fluoroether compound, wherein based on the weight of the electrolytic solution, the weight percentage of the cyclic fluorocarbonate is 15 wt % to 80 wt %. The electrolytic solution provided by the present application has high electric conductivity and good electrochemical stability and safety performance, can significantly improve the cycle performance of the battery, and especially meet the demand for long cycle life of a lithium metal battery, and has a very large application value in the lithium metal battery.

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