公开(公告)号：US11830981B2

公开(公告)日：2023-11-28

申请号：US16961826

申请日：2019-12-26

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Chao Tang ,  Jianming Zheng

IPC: H01M10/0568 ,  H01M50/417 ,  H01M50/449 ,  H01M10/0567 ,  H01M10/0569 ,  C07C255/05 ,  H01M4/36 ,  H01M4/38 ,  H01M4/48 ,  C07D327/00 ,  C07D327/06

CPC classification number: H01M10/0568 ,  C07C255/05 ,  C07D327/00 ,  H01M4/366 ,  H01M4/386 ,  H01M4/48 ,  H01M10/0567 ,  H01M10/0569 ,  H01M50/417 ,  H01M50/449 ,  H01M2300/0025

Abstract: An electrolyte, including: 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, fluoro, 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 fluoro, 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.

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：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：US20220115695A1

公开(公告)日：2022-04-14

申请号：US17281547

申请日：2020-03-24

Applicant: Ningde Amperex Technology Limited

Inventor： Chao Tang ,  Junfei Liu ,  Jianming Zheng ,  Qian Wen

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/42

Abstract: An electrolyte including a bis-cyclic sulfite compound and a multi-nitrile compound, which can form a stable protective layer on a positive electrode surface to ensure a lithium-ion battery stably operates at a voltage of ≥4.45V. The electrolyte can remarkably improve a high temperature intermittent cycle capacity retention ratio and a high temperature resistant safety performance upon circulation of the high-voltage lithium-ion battery.

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：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：US12159970B2

公开(公告)日：2024-12-03

申请号：US17362730

申请日：2021-06-29

Applicant: Ningde Amperex Technology Limited

Inventor： Wenqiang Li ,  Juan Ma ,  Chao Tang ,  Junfei Liu

IPC: H01M10/0567 ,  H01M10/0525

Abstract: An electrolytic solution includes a compound containing a —CN functional group and a compound containing a silicon functional group. M is C or Si. R11, R12, and R13 are each independently selected from a substituted or non-substituted C1-C12 alkylene group, a substituted or non-substituted C2-C12 alkenylene group, an O—R group, an R0—S—R group or an R0—O—R group, R0 and R are each independently selected from a substituted or non-substituted C1-C6 alkylene group. n is 0 or 1. R14 is H, fluorine, a cyano group, a substituted or non-substituted C1-C12 alkyl group, a substituted or non-substituted C2-C12 alkenyl group, an O—R1 group, an R0—S—R1 group, or an R0—O—R1 group. R0 is a substituted or non-substituted C1-C6 alkylene group, and R1 is a substituted or non-substituted C1-C6 alkyl group.

公开(公告)号：US20230299354A1

公开(公告)日：2023-09-21

申请号：US18131409

申请日：2023-04-06

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Hui Cui ,  Jian Liu ,  Xiexue Peng ,  Chao Tang

IPC: H01M10/0567 ,  H01M10/0569

CPC classification number: H01M10/0567 ,  H01M10/0569 ,  H01M2300/0042 ,  H01M2300/0034

Abstract: An electrolyte includes a first composition and a second composition. The first composition includes at least one of a compound shown in formula I-A, a compound shown in formula I-B, or a compound shown in formula I-C, and the second composition includes a compound shown in formula II. A11 to A16, R11 to R17, R21 to R22, L, and n are separately defined in this specification. The electrolyte can make the electrochemical apparatus and the electronic apparatus have both significantly improved high-temperature resistance performance and safety performance.

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：US20230100156A1

公开(公告)日：2023-03-30

申请号：US17957265

申请日：2022-09-30

Applicant: Ningde Amperex Technology Limited

Inventor： Shaoyun Zhou ,  Chao Tang

IPC: H01M10/0566 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525

Abstract: An electrolyte, an electrochemical device containing same, and an electronic device. Specifically, an electrolyte, including dimethyl carbonate, ethyl methyl carbonate, and lithium bis(oxalato)borate. The ethyl methyl carbonate and the lithium bis(oxalato)borate each account for a specified weight percent in the electrolyte, and the weight percent of the dimethyl carbonate and the weight percent of the ethyl methyl carbonate in the electrolyte meet a specified relationship. The electrolyte provides with balanced rate performance, the low-temperature discharge performance, and the high-temperature storage and cycle performance of the electrochemical device, and helps to achieve excellent comprehensive performance of the electrochemical device.