公开(公告)号：US20230246156A1

公开(公告)日：2023-08-03

申请号：US18193995

申请日：2023-03-31

Applicant: Ningde Amperex Technology Limited

Inventor： Jianyu LIU ,  Wenqiang LI ,  Jianming ZHENG ,  Shuai XU

IPC: H01M4/04 ,  H01M10/0525 ,  H01M10/0569 ,  H01M50/534 ,  H01M10/0567

CPC classification number: H01M4/0404 ,  H01M10/0525 ,  H01M10/0569 ,  H01M50/534 ,  H01M10/0567 ,  H01M2300/0037 ,  H01M2300/0051

Abstract: An electrochemical apparatus, where the electrochemical apparatus includes electrodes, where the electrode includes a current collector, an active material layer disposed on at least one surface of the current collector, a tab disposed on the current collector, and a tab protection layer disposed on the tab, where the tab protection layer includes a first polymer layer, the first polymer layer has a melting point of TA° C., and 110≤TA≤136.5; and an electrolyte, where the electrolyte includes ethylene carbonate and propylene carbonate; based on a weight of the electrolyte, a sum of weight percentages of the ethylene carbonate and the propylene carbonate is Y %, and Y is 20-80; and Y and TA satisfy 0.147

公开(公告)号：US20220059873A1

公开(公告)日：2022-02-24

申请号：US17460926

申请日：2021-08-30

Applicant: Ningde Amperex Technology Limited

Inventor： Yali XIONG ,  Wenqiang LI ,  Mingming GUAN ,  Jianming ZHENG

IPC: H01M10/0569 ,  H01M10/0567 ,  C07D207/46 ,  C07C255/04 ,  C07C255/16 ,  C07C255/05 ,  C07C309/06 ,  C07D327/10

Abstract: An electrolyte includes a compound of formula 1: R1 and R2 are each independently selected from H, halogen atom, a substituted or unsubstituted C1-10 alkyl group, a substituted or unsubstituted C3-10 cycloalkyl group, a substituted or unsubstituted C2-10 alkenyl group, a substituted or unsubstituted C2-10 alkynyl group, a substituted or unsubstituted C1-10 alkoxy group, a substituted or unsubstituted C6-10 aryl group, a substituted or unsubstituted C3-10 heteroaryl group, or any combination thereof. R is selected from a substituted or unsubstituted C1-10 alkyl group, a substituted or unsubstituted C3-10 cycloalkyl group, a substituted or unsubstituted C2-10 alkenyl group, a substituted or unsubstituted C2-10 alkynyl group, a substituted or unsubstituted C1-10 alkoxy group, a substituted or unsubstituted C6-10 aryl group or a substituted or unsubstituted C3-10 heteroaryl group, a substituted or unsubstituted C3-10 heterocycloalkyl group, a butyrolactam group, or any combination thereof.

公开(公告)号：US20240339730A1

公开(公告)日：2024-10-10

申请号：US18746092

申请日：2024-06-18

Applicant: Ningde Amperex Technology Limited

Inventor： Xiexue PENG ,  Jianming ZHENG ,  Chao TANG ,  Haiyang NAN

IPC: H01M50/489 ,  H01M10/0525 ,  H01M10/0567 ,  H01M50/417 ,  H01M50/426 ,  H01M50/434 ,  H01M50/446 ,  H01M50/449 ,  H01M50/451 ,  H01M50/457 ,  H01M50/491

CPC classification number: H01M50/489 ,  H01M10/0525 ,  H01M10/0567 ,  H01M50/417 ,  H01M50/426 ,  H01M50/434 ,  H01M50/446 ,  H01M50/449 ,  H01M50/451 ,  H01M50/457 ,  H01M50/491 ,  H01M2300/0025

Abstract: An electrochemical device includes a separator and an electrolyte. The separator includes a first porous layer and a second porous layer; and the electrolyte includes at least one compound containing 2 to 3 cyano groups; and a pore closing temperature of the first porous layer is different from a pore closing temperature of the second porous layer.

公开(公告)号：US20240021878A1

公开(公告)日：2024-01-18

申请号：US18373983

申请日：2023-09-28

Applicant: Ningde Amperex Technology Limited

Inventor： Jianyu LIU ,  Wenqiang LI ,  Jianming ZHENG

IPC: H01M10/0568 ,  H01M10/0567 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/42

CPC classification number: H01M10/0568 ,  H01M10/0567 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/4235 ,  H01M2300/0037

Abstract: An electrolyte and an electrochemical apparatus containing the electrolyte. The electrolyte includes a fluorine-containing sulfonimide lithium salt and a trinitrile compound, where based on a weight of the electrolyte, a percentage of the fluorine-containing sulfonimide lithium salt is X %, and a percentage of the trinitrile compound is Y %, where 1≤X+Y≤6. The electrolyte in this application can significantly improve safety performance of lithium-ion batteries.

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.

公开(公告)号：US20220006122A1

公开(公告)日：2022-01-06

申请号：US17475704

申请日：2021-09-15

Applicant: Ningde Amperex Technology Limited

Inventor： Hui CUI ,  Wenqiang LI ,  Yali XIONG ,  Jianming ZHENG

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M4/46

Abstract: An electrochemical device includes a positive electrode, a negative electrode, a separator, and an electrolyte, where the electrolyte contains a nitrile compound and transition metal ions, and satisfies 5≤A/B≤30000, where based on a molar mass of the electrolyte, a molar percentage of a cyano group in the electrolyte is A %, and based on a weight of the electrolyte, a weight percentage of the transition metal ions in the electrolyte is B %. The electrochemical device ensures that the cyano group and the transition metal ions in the electrolyte satisfy a specified relationship, to reduce leaching of the transition metal ions from a positive electrode active material and stabilize structural distortion of the positive electrode active material in a charge and discharge process, thereby improving high-temperature cycle performance and floating charge performance of the electrochemical device.

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.

公开(公告)号：US20240234815A1

公开(公告)日：2024-07-11

申请号：US18606708

申请日：2024-03-15

Applicant: Ningde Amperex Technology Limited

Inventor： Chunrui XU ,  Yanyan XU ,  Jianming ZHENG ,  Chao TANG

IPC: H01M10/0567 ,  H01M10/0569

CPC classification number: H01M10/0567 ,  H01M10/0569 ,  H01M2300/0034 ,  H01M2300/004

Abstract: An electrolytic solution, an electrochemical device containing the electrolytic solution, and an electronic device. The electrolytic solution includes ethylene carbonate, propylene carbonate, and fluoroethylene carbonate. Based on a mass of the electrolytic solution, a mass percent of the ethylene carbonate is a, a mass percent b of the propylene carbonate is 12% to 35%, a mass percent c of the fluoroethylene carbonate is 0.2% to 2.5%, and the electrolytic solution satisfies 0.1≤a/b≤0.75.

公开(公告)号：US20210408603A1

公开(公告)日：2021-12-30

申请号：US17059701

申请日：2020-01-20

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Wenqiang LI ,  Jian LIU ,  Mingming GUAN ,  Jianming ZHENG

IPC: H01M10/0568 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/38 ,  H01M4/36 ,  C07D327/10 ,  C07D411/14 ,  C07D411/04 ,  C07D497/04

Abstract: An electrolytic solution includes the compound of Formula I and a carboxylate compound: The electrochemical device prepared with the electrolytic solution has reduced storage impedance, and improved post-storage swelling, overcharge performance and hot box performance.

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.