-
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: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:US11233270B2
公开(公告)日:2022-01-25
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 , C08F212/08 , C08F220/14 , C08J3/09 , C08J3/11 , H01M10/052 , H01G11/56
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: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: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:US20220123363A1
公开(公告)日:2022-04-21
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: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: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.
-
-
-
-
-
-
-
-
-