公开(公告)号：US20210257662A1

公开(公告)日：2021-08-19

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

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.

公开(公告)号：US20200099101A1

公开(公告)日：2020-03-26

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

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：US20210408600A1

公开(公告)日：2021-12-30

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: H01M10/0568 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/131 ,  H01M4/525 ,  H01M4/66 ,  H01M50/491 ,  H01M50/417

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：US20200168949A1

公开(公告)日：2020-05-28

申请号：US16394051

申请日：2019-04-25

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Qian WEN ,  Bin WANG ,  Junfei LIU ,  Shuirong ZHANG

IPC: H01M10/0565 ,  H01M10/052 ,  C08F212/08 ,  C08F220/14 ,  C08J3/11 ,  C08J3/09

Abstract: The present application relates to a gel polymer electrolyte and an electrochemical device comprising the gel polymer electrolyte. The gel polymer electrolyte according to the present application comprises a polymer film and an organic electrolytic solution comprising a lithium salt, a phosphate ester compound, and a fluoroether compound. The gel polymer electrolyte according to the present application has higher ionic conductivity and better electrochemical stability, and is capable of significantly improving the safety and cycle performance of the electrochemical device.

公开(公告)号：US20190214680A1

公开(公告)日：2019-07-11

申请号：US16131317

申请日：2018-09-14

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Xiangkun BO ,  Shuirong ZHANG ,  Chao TANG ,  Juan MA

IPC: H01M10/0567 ,  H01M10/0525

Abstract: The present application provides an electrolytic solution, comprising: a carbonate compound of the formula (I), wherein R1, R2, R3 and R4 are each independently selected from hydrogen or halogen, and at least one of R1, R2, R3 and R4 is halogen; a carbonate compound of the formula (II), wherein R5 and R6 are each independently selected from hydrogen, halogen, (C1-C10)alkyl, (C1-C10)haloalkyl, (C1-C10)alkoxy or (C1-C10)haloalkoxy, and at least one of R5 and R6 is (C1-C10)haloalkyl or (C1-C10)haloalkoxy; and a nitrile compound, the nitrile compound being selected from the group consisting of a dinitrile compound of the formula (III), a dinitrile compound of the formula (IV), a trinitrile compound of the formula (V), and a combination thereof: where x is a positive integer from 1 to 10, and y is a positive integer from 2 to 10.

公开(公告)号：US20230318038A1

公开(公告)日：2023-10-05

申请号：US18331320

申请日：2023-06-08

Applicant: Ningde Amperex Technology Limited

Inventor： Shuirong ZHANG ,  Lilan ZHANG ,  Xiao YUAN ,  Chao TANG

IPC: H01M10/0567 ,  H01M4/134 ,  H01M10/0569

CPC classification number: H01M10/0567 ,  H01M4/134 ,  H01M10/0569 ,  H01M2004/027

Abstract: An electrochemical apparatus, including a positive electrode, a negative electrode, and an electrolyte, where the electrolyte includes fluoroethylene carbonate and non-fluorinated cyclic carbonate, the fluoroethylene carbonate accounts for a % of the electrolyte by mass, and the non-fluorinated cyclic carbonate accounts for b % of the electrolyte by mass, where 0.05≤a/b≤2.5.

公开(公告)号：US20230261264A1

公开(公告)日：2023-08-17

申请号：US18193976

申请日：2023-03-31

Applicant: Ningde Amperex Technology Limited

Inventor： Shuirong ZHANG ,  Junfei LIU ,  Chao TANG

IPC: H01M10/0569 ,  H01M4/38 ,  H01M4/62 ,  H01M4/587 ,  H01M4/134 ,  H01M4/133

CPC classification number: H01M10/0569 ,  H01M4/386 ,  H01M4/628 ,  H01M4/587 ,  H01M4/134 ,  H01M4/133 ,  H01M2300/0034 ,  H01M2300/0037 ,  H01M2004/027

Abstract: An electrochemical device, including a positive electrode, a negative electrode, a separator, and an electrolytic solution. The negative electrode includes a negative active material layer. The negative active material layer includes a silicon material. The electrolytic solution includes fluorocarbonate and cyclic ether. A weight percent of the fluorocarbonate, a weight percent of the cyclic ether, and a unit reaction area of the negative active material layer satisfy a specific relational expression, thereby improving the high-temperature storage performance and the high-temperature cycle performance of the electrochemical device.

公开(公告)号：US20220131196A1

公开(公告)日：2022-04-28

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 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525

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：US20200243906A1

公开(公告)日：2020-07-30

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 ,  H01M10/42 ,  C07C255/05 ,  C07C255/04 ,  C07C255/09

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：US20210083327A1

公开(公告)日：2021-03-18

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: H01M10/0567 ,  H01M10/0525

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.