公开(公告)号：US12240798B2

公开(公告)日：2025-03-04

申请号：US17573710

申请日：2022-01-12

Applicant: Ningde Amperex Technology Limited

Inventor： Lilan Zhang ,  Chao Tang ,  Weihua Zhu ,  Jianming Zheng

IPC: C07C255/46 ,  C07C255/04 ,  C07C255/05 ,  C07C255/15 ,  C07C255/16 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/42

Abstract: An electrolyte including one or more nitrile benzoquinone compounds, and the nitrile benzoquinone compound is selected from the group consisting of the compounds represented by formula I, formula II, and formula III: The substituents R1 to R9 are each independently selected from the group consisting of hydrogen, a C2 to C12 ether group, a C1 to C12 alkoxy group, halogen, a C1 to C12 alkyl group, a C2 to C12 alkenyl group, a C2 to C12 alkynyl group, and a C6 to C26 aryl group. The electrolyte can form a stable protective film on a cathode, thereby increasing the cycle capacity retention rate and high temperature storage performance of an electrochemical device.

公开(公告)号：US12087907B2

公开(公告)日：2024-09-10

申请号：US16976938

申请日：2020-03-03

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

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

IPC: H01M10/0567 ,  H01M4/48 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/42 ,  H01M4/02 ,  H01M10/052 ,  H01M10/0568

CPC classification number: H01M10/0567 ,  H01M4/483 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/4235 ,  H01M2004/027 ,  H01M10/052 ,  H01M10/0568 ,  H01M2300/0025

Abstract: An electrolyte including an imidazolium salt compound and a pyridine compound. The electrolyte, includes a compound of Formula I and a compound of Formula II:




where R1 is selected from halo, cyano, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C2-C12 alkenyl, substituted or unsubstituted C2-C12 alkynyl, substituted or unsubstituted C2-C12 alkoxy, substituted or unsubstituted C3-C12 cycloalkyl, and substituted or unsubstituted C6-C12 aryl; and R11, R12, R13, R14 and R15 are each independently selected from H, halo, cyano, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C2-C12 alkenyl, substituted or unsubstituted C2-C12 alkynyl, substituted or unsubstituted C2-C12 alkoxy, substituted or unsubstituted C3-C12 cycloalkyl, and substituted or unsubstituted C6-C12 aryl; when substituted, the substituent is halo or cyano. The electrolyte has high stability and can significantly improve the cycle performance and high-temperature storage performance of electrochemical devices.

公开(公告)号：US20220153690A1

公开(公告)日：2022-05-19

申请号：US17573710

申请日：2022-01-12

Applicant: Ningde Amperex Technology Limited

Inventor： Lilan Zhang ,  Chao Tang ,  Weihua Zhu ,  Jianming Zheng

IPC: C07C255/46 ,  H01M10/0567 ,  H01M10/0525 ,  H01M10/42 ,  C07C255/16 ,  C07C255/15 ,  C07C255/04 ,  C07C255/05

Abstract: An electrolyte including one or more nitrile benzoquinone compounds, and the nitrile benzoquinone compound is selected from the group consisting of the compounds represented by formula I, formula II, and formula III: The substituents R1 to R9 are each independently selected from the group consisting of hydrogen, a C2 to C12 ether group, a C1 to C12 alkoxy group, halogen, a C1 to C12 alkyl group, a C2 to C12 alkenyl group, a C2 to C12 alkynyl group, and a C6 to C26 aryl group. The electrolyte can form a stable protective film on a cathode, thereby increasing the cycle capacity retention rate and high temperature storage performance of an electrochemical device.

公开(公告)号：US20240243363A1

公开(公告)日：2024-07-18

申请号：US18622608

申请日：2024-03-29

Applicant: Ningde Amperex Technology Limited

Inventor： Lilan Zhang ,  Weixiao Chen ,  Chao Tang

IPC: H01M10/0567 ,  H01M4/38 ,  H01M10/0525

CPC classification number: H01M10/0567 ,  H01M4/386 ,  H01M10/0525 ,  H01M2300/0025

Abstract: An electrochemical apparatus including a negative electrode plate and an electrolyte, where the negative electrode plate includes a negative electrode active material, where the negative electrode active material includes a silicon-based material; and the electrolyte includes a first substance, a second substance, and a third substance; where the first substance is selected from a fluorobenzene compound or a fluoroether compound; the second substance is at least one of phosphate, phosphite, carbonate, carboxylate, ether, or sulfone; and the third substance is a lithium salt; and based on mass of the electrolyte, a mass ratio of the second substance to the third substance is Y, where 0.8≤Y≤4. The electronic apparatus includes the electrochemical apparatus.

公开(公告)号：US11967674B2

公开(公告)日：2024-04-23

申请号：US16970864

申请日：2020-03-03

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Lilan Zhang ,  Chao Tang ,  Jianming Zheng

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

CPC classification number: H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2300/0025

Abstract: An electrochemical device, including a positive electrode, a negative electrode, a separator and an electrolyte. The electrolyte includes a nitrile compound, and the mass percentage of the nitrile compound in the electrolyte is A %; the negative electrode includes a current collector, wherein the current collector comprises a first region and a second region; the first region is provided with a negative electrode active substance layer; the second region does not comprise a negative electrode active substance layer; the area of the second region is B % of the surface area of the current collector; and A×B