公开(公告)号：US12132170B2

公开(公告)日：2024-10-29

申请号：US16970295

申请日：2020-01-20

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

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

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

CPC classification number: H01M10/0567 ,  H01M10/0525 ,  H01M2300/004

Abstract: The present application relates to an electrolyte and an electrochemical device including the same. The electrolyte includes a diboronic acid compound and a nitrile compound, so that the storage performance and cycle performance of the electrochemical device using the electrolyte can be remarkably improved.

公开(公告)号：US20230275269A1

公开(公告)日：2023-08-31

申请号：US17281548

申请日：2021-02-03

Applicant: Ningde Amperex Technology Limited

Inventor： Chunrui Xu ,  Yanyan Xu ,  Jianming Zheng ,  Chao Tang

IPC: H01M10/0567

CPC classification number: H01M10/0567

Abstract: An electrolyte, including an additive A, wherein the additive A comprises a non-fluorinated lithium borate compound; and at least one additive selected from an additive B, an additive C, an additive D, or an additive E, wherein the additive B comprises at least one of vinylene carbonate, fluoroethylene carbonate, lithium tetrafluoroborate, lithium difluoro(oxalato)borate, or lithium difluorophosphate; the additive C comprises a compound comprising S═O; the additive D comprises a compound having 2 to 4 cyano groups; and the additive E comprises a silicon-containing carbonate compound. This application provides an electrolyte and an electrochemical apparatus. The electrolyte includes additives such as a non-fluorinated lithium borate compound, thereby effectively improving high-temperature storage performance, cycle performance, floating charge performance and/or overcharge performance of the electrochemical apparatus.

公开(公告)号：US11031630B2

公开(公告)日：2021-06-08

申请号：US16422012

申请日：2019-05-24

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Shuirong Zhang ,  Wenqiang Li ,  Qian Wen ,  Chao Tang

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M10/0525 ,  C07C255/05 ,  C07C255/04 ,  C07C255/09 ,  H01M10/42 ,  C07D239/62 ,  C07D239/66 ,  C07F7/04

Abstract: The present application provides an electrolyte and an electrochemical device. The electrolyte according to the present application comprises a carboxylate, a barbituric acid compound and a nitrile compound. Adding a barbituric acid compound and a nitrile compound of particular structure to an electrolyte containing a carboxylate solvent can significantly improve the rate performance of an electrochemical device, and mitigate capacity loss after storage at room temperature, and cycle fading and gas generation at high-temperature of the electrochemical device.

公开(公告)号：US20190245245A1

公开(公告)日：2019-08-08

申请号：US16162379

申请日：2018-10-16

Applicant: Ningde Amperex Technology Limited

Inventor： Shuirong Zhang ,  Chao Tang ,  Wenqiang Li

IPC: H01M10/0569 ,  H01M10/0525

CPC classification number: H01M10/0569 ,  H01M10/0525 ,  H01M2300/0028

Abstract: The present application provides an electrolyte and a secondary battery comprising the same. The electrolyte is prepared by adding a siloxane compound, a nitrile compound and an electrolyte salt with different contents into an organic solvent.

公开(公告)号：US12100811B2

公开(公告)日：2024-09-24

申请号：US17474335

申请日：2021-09-14

Applicant: Ningde Amperex Technology Limited

Inventor： Xiexue Peng ,  Jianming Zheng ,  Chao Tang

IPC: H01M10/0568 ,  C07F9/50 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569

CPC classification number: H01M10/0568 ,  C07F9/5004 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569

Abstract: An electrolyte including at least a compound of formula I:




A1, A2, and A3 are each independently selected from the following formulas I-A, I-B, I-C, or I-D, and the A1, A2, and A3 are not all I-A:





m and k are 0 or 1, and n is integer from 1 to 6. R11, R13, R14, R15, R16, R17, R18, R19, R1a, R1b, R1c, and R1d are selected from hydrogen; substituted or unsubstituted C1-C10 alkylidene groups, C2-C10 alkenylene groups, C2-C10 alkynylidene groups, C3-C10 cumulative dienyl groups, C6-C10 aryl groups, or C3-C10 alicyclic hydrocarbon groups. R12 is selected from substituted or unsubstituted C1-C10 alkyl groups, C2-C10 alkenyl groups, C2-C10 alkynyl groups, C3-C10 cumulative dienyl groups, C6-C10 aryl groups, C3-C10 alicyclic hydrocarbon groups, or heteroatom-containing functional groups.

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：US20230207885A1

公开(公告)日：2023-06-29

申请号：US18087033

申请日：2022-12-22

Applicant: Ningde Amperex Technology Limited

Inventor： Wenqiang Li ,  Jian Liu ,  Chao Tang

IPC: H01M10/0569 ,  H01M4/04 ,  H01M10/0567 ,  H01M10/0568

CPC classification number: H01M10/0569 ,  H01M4/0404 ,  H01M10/0567 ,  H01M10/0568 ,  H01M2004/028

Abstract: An electrochemical apparatus, including an electrolyte and a positive electrode, where the electrolyte includes ethylene carbonate and propylene carbonate, the positive electrode includes a positive electrode current collector and a positive electrode active material layer disposed on at least one surface of the positive electrode current collector, and the positive electrode active material layer includes a positive electrode active material, where percentages of ethylene carbonate and propylene carbonate satisfy a specific relationship, and under an X-ray diffraction (XRD) test, a peak intensity I003 of plane 003 of the positive electrode active material layer and a peak intensity I104 of plane 104 of the positive electrode active material layer satisfy a specific relationship. With the above configuration, the electrochemical apparatus of this application shows excellent performances, especially the high-temperature floating charge performance.

公开(公告)号：US11637319B2

公开(公告)日：2023-04-25

申请号：US16652390

申请日：2020-01-20

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Xiexue Peng ,  Jiqiong Liu ,  Junfei Liu ,  Chao Tang

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

Abstract: The present application relates to an electrolytic solution and an electrochemical device comprising the electrolytic solution. The electrolytic solution comprises a carbonate compound having a silicon-containing functional group, so as to significantly improve the overcharge performance and high-temperature storage performance of an electrochemical device using the electrolytic solution.

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.

公开(公告)号：US11031626B2

公开(公告)日：2021-06-08

申请号：US16211537

申请日：2018-12-06

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Wenqiang Li ,  Shuirong Zhang ,  Chao Tang

IPC: H01M10/0567 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M10/42 ,  H01M4/02

Abstract: The present application relates to an electrolytic solution and an electrochemical device containing the electrolytic solution. The electrolytic solution of the present invention comprises a compound having a —CN functional group, and is capable of significantly improving the floating-charge performance, the increased impedance accompanying the long-term cycle test, and the thermal impact performance of an electrochemical device using the electrolytic solution.