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    ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS
    1.
    发明公开
    ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS 审中-公开

    公开(公告)号：US20240291036A1

    公开(公告)日：2024-08-29

    申请号：US18612373

    申请日：2024-03-21

    Applicant: Ningde Amperex Technology Limited

    Inventor： Junfei LIU ,  Shaoyun ZHOU ,  Disheng LAN ,  Yanyan XU

    IPC: H01M10/0567 ,  H01M4/02 ,  H01M4/62

    CPC classification number: H01M10/0567 ,  H01M4/625 ,  H01M2004/028

    Abstract: An electrochemical apparatus includes a positive electrode, a negative electrode, a separator, and an electrolyte, where the positive electrode includes a positive electrode current collector, a positive electrode active substance layer, and a conductive coating disposed between the positive electrode current collector and the positive electrode active substance layer; the electrolyte includes a first fluorine-containing metal salt, where the first fluorine-containing metal salt includes at least one of fluorine-containing sulfonimide lithium salts; and the electrochemical apparatus satisfies the following relationship: 0.1≤X/d≤105, where X g/m2 is mass per unit area of fluorine-containing sulfonimide lithium salt contained in the electrochemical apparatus on one surface of the positive electrode current collector, and d μm is thickness of the conductive coating on one surface of the positive electrode current collector.

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

    公开(公告)号：US20210408601A1

    公开(公告)日：2021-12-30

    申请号：US16961495

    申请日：2019-12-26

    Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

    Inventor： Chao TANG ,  Lilan ZHANG ,  Junfei LIU ,  Jianming ZHENG

    IPC: H01M10/0568 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/0567 ,  C07C255/05 ,  C07D319/12

    Abstract: An electrolyte includes diglycolic anhydride and a trinitrile compound, with which the cycle performance and the high-temperature stability under over-discharge conditions of lithium-ion batteries are significantly improved. The electrolyte includes a compound of Formula I; and at least one of a compound of Formula II or a compound of Formula III; R1, R2, R3 and R4 are each independently selected from hydrogen, halo, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C2-C10 alkenyl, substituted or unsubstituted C2-C10 alkynyl, substituted or unsubstituted C6-C12 aryl, substituted or unsubstituted C1-C10 alkoxy, or substituted or unsubstituted C6-C12 aryloxy, wherein when substituted, the substituent is halo, cyano, or C1-C10 alkyl; and a, d and f are each independently selected from an integer from 1 to 5, and b, c, e, g, h and i are each independently selected from an integer from 0 to 5.

    ELECTROLYTE AND ELECTROCHEMICAL DEVICE
    8.
    发明申请
    ELECTROLYTE AND ELECTROCHEMICAL DEVICE 审中-公开

    公开(公告)号：US20200161702A1

    公开(公告)日：2020-05-21

    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 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0525

    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.

    ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS CONTAINING SAME
    9.
    发明申请
    ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS CONTAINING SAME 有权

    公开(公告)号：US20250070256A1

    公开(公告)日：2025-02-27

    申请号：US18804403

    申请日：2024-08-14

    Applicant: Ningde Amperex Technology Limited

    Inventor： Junfei LIU ,  Hui CUI ,  Lilan ZHANG

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

    Abstract: An electrochemical apparatus includes a positive electrode, a negative electrode, a separator, and an electrolyte. The electrolyte includes a diluent, an electrolytic salt, and a compound of formula III. The diluent is selected from a group consisting of a compound of formula I and a compound of formula II. A molar mass of the diluent is Mz, and based on a total weight of the electrolyte, a percentage of the diluent is z wt %; a molar mass of the electrolytic salt is Mx, and based on the total weight of the electrolyte, a percentage of the electrolytic salt is x wt %; and a molar mass of the compound of formula III is My, and based on the total weight of the electrolyte, a percentage of the compound of formula III is y wt %, satisfying: 0.4 : 1 ≤ y M ⁢ y : x M ⁢ x ≤ 4 : 1 ; and z M ⁢ z y M ⁢ y + x M ⁢ x ≥ 1.5 .

    ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS INCLUDING SAME
    10.
    发明申请
    ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS INCLUDING SAME 有权

    公开(公告)号：US20250023106A1

    公开(公告)日：2025-01-16

    申请号：US18899505

    申请日：2024-09-27

    Applicant: Ningde Amperex Technology Limited

    Inventor： Hui CUI ,  Junfei LIU ,  Chao TANG ,  Junqiang HAN

    IPC: H01M10/0569 ,  H01M4/02 ,  H01M4/525 ,  H01M10/0567 ,  H01M10/0568

    Abstract: An electrochemical apparatus includes a positive electrode and an electrolyte. The electrolyte includes ethylene carbonate (EC), propylene carbonate (PC), and succinonitrile (SN). The positive electrode includes a positive electrode active material, where the positive electrode active material includes metal element A, and the metal element A includes at least one of the following elements: Mg, Zr, or Al. Based on a mass of the electrolyte, a mass percentage of SN is a %, a mass percentage of EC is b %, and a mass percentage of PC is c %, where k=b/c, 1.25≤k≤6, and a/k≥0.2. Based on a mass of the positive electrode active material, a mass percentage of the metal element A is x %, where 0.01≤x≤1. The foregoing electrochemical apparatus exhibits excellent high-temperature cycling performance and high-temperature interval cycling performance.

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