公开(公告)号：US12176488B2

公开(公告)日：2024-12-24

申请号：US17569307

申请日：2022-01-05

Applicant: Ningde Amperex Technology Limited

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

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

Abstract: An electrochemical device includes a positive electrode, a negative electrode, a separator located between the positive electrode and the negative electrode, and an electrolytic solution. The positive electrode includes a positive current collector and a positive active material layer disposed on the positive current collector. The positive active material layer includes a positive active material. The positive active material includes an element A. The element A is selected from at least one of Al, B, Ca, Mg, Ti, Cu, Nb, Si, Zr, Y, or W. The electrolytic solution includes at least one of 1,3-propane sultone or a derivative thereof. A mass ratio of the element A in the positive active material to 1,3-propane sultone or a derivative is 1:0.2 to 1:50.

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.

公开(公告)号：US11646447B2

公开(公告)日：2023-05-09

申请号：US16735214

申请日：2020-01-06

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Shuirong Zhang ,  Wenqiang Li ,  Juan Ma ,  Chao Tang

IPC: H01M10/0567 ,  H01M10/0568

CPC classification number: H01M10/0567 ,  H01M10/0568 ,  H01M2220/30 ,  H01M2300/0025

Abstract: The present application relates to an electrolyte and an electrochemical device. The electrolyte comprises a cesium salt and a nitrile compound. The electrolyte provided in the present application improves rapid charge-discharge performance and cycle performance of a lithium-ion battery while improving the problem of battery gassing during continuous charge.

公开(公告)号：US20190173124A1

公开(公告)日：2019-06-06

申请号：US16167869

申请日：2018-10-23

Applicant: Ningde Amperex Technology Limited

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

IPC: H01M10/0525 ,  H01M10/04 ,  H01M10/0567

Abstract: Examples of the present application provide an electrolyte comprising a lithium salt, an organic solvent, and an additive, wherein the additive comprises a nitrile compound, a fluorophosphazene, and a fluoroether. By using the electrolyte comprising a nitrile compound, a fluorophosphazene, a fluoroether, the thermal stability of the electrolyte itself and the positive electrode material may be significantly improved through the synergistic effect of above three and the safety of the lithium-ion battery is greatly enhanced when the electrolyte is applied to the lithium-ion battery. In addition, by adding a cyclic carbonate with carbon-carbon double bond and fluorocyclic carbonate and by controlling the mass percentage of nitrile compound, fluorophosphazene, fluoroether in electrolyte, significant improvements in the safety of lithium-ion batteries may be achieved without significantly degrading the cycling performance of the lithium-ion battery.

公开(公告)号：US11742518B2

公开(公告)日：2023-08-29

申请号：US16770783

申请日：2019-12-24

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Hui Cui ,  Shuirong Zhang ,  Chao Tang ,  Jianming Zheng

IPC: H01M10/0567 ,  H01M50/417 ,  H01M50/491 ,  H01M4/131 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/587

CPC classification number: H01M10/0567 ,  H01M4/131 ,  H01M4/587 ,  H01M4/662 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M50/417 ,  H01M50/491 ,  H01M2300/0028

Abstract: An electrolyte includes at least one of a compound of Formula I, a compound of Formula II or a compound of Formula III; and a compound of Formula IV; where,




R11, R12, R13, R21, R22, R31, R32, R33 and R34 are independently selected from H, halo, cyano, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C2-C10 alkenyl, and substituted or unsubstituted C6-C12 aryl; R41 and R44 are independently selected from H, F, cyano, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C2-C10 alkenyl, substituted or unsubstituted C6-C12 aryl, Ra—(O—Rb), or (O—Rb); and R42 and R43 are independently selected from Rc—(O—Rd) or (O—Rd). Rb is selected from substituted or unsubstituted C1-C4 alkyl; Ra, Rc and Rd are independently selected from substituted or unsubstituted C1-C4 alkylene, C2-C5 alkenylene, or C6-C12 aryl.

公开(公告)号：US11387491B2

公开(公告)日：2022-07-12

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

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：US11165097B2

公开(公告)日：2021-11-02

申请号：US16454904

申请日：2019-06-27

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Chunrui Xu ,  Wenqiang Li ,  Chao Tang ,  Shuirong Zhang

IPC: H01M10/0564 ,  H01M10/0525 ,  C01B25/30 ,  C07D327/02 ,  C07D327/10 ,  C07F7/18 ,  H01M4/62

Abstract: The present application relates to an electrolyte, an electrochemical device and an electronic device comprising the same. The electrolyte of the present application includes a cyclic N-containing sulfonyl-compound and at least one of vinylene carbonate, fluoroethylene carbonate, lithium tetrafluoroborate, lithium difluoro(oxalato)borate or lithium difluorophosphate. The electrolyte of the present application may further include a sulfur-oxygen double bond containing compound and a silicon-containing carbonate. Compared with the prior art, using the electrolyte provided by the present application can effectively improve the high-temperature storage, cycle performance and overcharge performance of an electrochemical device, such as a lithium-ion battery.

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：US11735771B2

公开(公告)日：2023-08-22

申请号：US16652468

申请日：2020-01-20

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Wenqiang Li ,  Shuirong Zhang ,  Chunrui Xu ,  Juan Ma

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

CPC classification number: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2300/0042

Abstract: The present application relates to an electrolytic solution and an electrochemical device using same. The electrolytic solution of the present application comprises a compound containing a —CN functional group and a compound containing a P—O bond. By introducing the compound containing a —CN functional group and the compound containing a P—O bond into the electrolytic solution, an active material can be better protected, thereby effectively improving floatation performance and nailing performance of a battery, and cycle impedance of the battery.