公开(公告)号：US12176490B2

公开(公告)日：2024-12-24

申请号：US17362556

申请日：2021-06-29

Applicant: Ningde Amperex Technology Limited

Inventor： Qian Wen ,  Bin Wang ,  Jianming Zheng ,  Shuai Xu

IPC: H01M10/0569 ,  H01G11/24 ,  H01G11/28 ,  H01G11/60 ,  H01G11/62 ,  H01G11/64 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568

Abstract: An electrochemical device including an anode having an anode current collector and a skeleton layer, the skeleton layer being disposed in an central region on the anode current collector, and a region, not covered by the skeleton layer, on the anode current collector being provided with an insulation layer; a cathode; and an electrolyte including about 1 wt % to about 40 wt % of a sulfone compound, about 1 wt % to about 40 wt % of a phosphorus compound and about 1 wt % to about 70 wt % of a fluoroether compound, based on the total weight of the electrolyte. The electrochemical device has superior cycle performance and safety performance.

公开(公告)号：US11621437B2

公开(公告)日：2023-04-04

申请号：US16962422

申请日：2020-02-14

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Jianyu Liu ,  Jianming Zheng ,  Qian Wen ,  Wenqiang Li

IPC: H01M10/0567 ,  H01M10/42 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

Abstract: An electrolyte, including a fluorine-containing phosphate ester and a carboxylate ester, wherein the fluorine-containing phosphate ester is represented by Formula 1: R1, R2 and R3 are each independently selected from hydrogen, a C1-C10 alkyl group, C1-C10 alkoxy group, C1-C10 haloalkyl group, C1-C10 haloalkoxy group, C1-C10 phosphate ester group, or C1-C10 mono- or multiple-carbonate ester group, wherein at least one of R1, R2 and R3 comprises a fluorine atom. The weight ratio of the fluorine-containing phosphate ester to the carboxylate ester is 0.001-0.5.

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：US20210328268A1

公开(公告)日：2021-10-21

申请号：US17362556

申请日：2021-06-29

Applicant: Ningde Amperex Technology Limited

Inventor： Qian Wen ,  Bin Wang ,  Jianming Zheng ,  Shuai Xu

IPC: H01M10/0569 ,  H01M10/0568 ,  H01M10/0567 ,  H01M10/0525 ,  H01G11/28 ,  H01G11/60 ,  H01G11/64 ,  H01G11/62 ,  H01G11/24

Abstract: An electrochemical device including an anode having an anode current collector and a skeleton layer, the skeleton layer being disposed in an central region on the anode current collector, and a region, not covered by the skeleton layer, on the anode current collector being provided with an insulation layer; a cathode; and an electrolyte including about 1 wt % to about 40 wt % of a sulfone compound, about 1 wt % to about 40 wt % of a phosphorus compound and about 1 wt % to about 70 wt % of a fluoroether compound, based on the total weight of the electrolyte. The electrochemical device has superior cycle performance and safety performance.

公开(公告)号：US11444330B2

公开(公告)日：2022-09-13

申请号：US16652593

申请日：2020-03-30

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Qian Wen ,  Bin Wang ,  Xiexue Peng ,  Jianming Zheng

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

Abstract: The present application relates to an electrolytic solution and an electrochemical device using the same. The electrolytic solution comprises a cyclic fluorocarbonate, a chain fluorocarbonate and a fluoroether compound, wherein based on the weight of the electrolytic solution, the weight percentage of the cyclic fluorocarbonate is 15 wt % to 80 wt %. The electrolytic solution provided by the present application has high electric conductivity and good electrochemical stability and safety performance, can significantly improve the cycle performance of the battery, and especially meet the demand for long cycle life of a lithium metal battery, and has a very large application value in the lithium metal battery.

公开(公告)号：US11342554B2

公开(公告)日：2022-05-24

申请号：US16676668

申请日：2019-11-07

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Bin Wang ,  Qian Wen ,  Yibo Zhang ,  Qiaoshu Hu

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/60 ,  H01M10/0525 ,  H01M4/02

Abstract: The present application relates to an anode, and an electrochemical device and an electronic device comprising the same. Embodiments of the present application provided an anode comprising: a current collector, a first anode structure layer and a second anode structure layer. The first anode structure layer comprises a first framework material and the second anode structure layer comprises a second framework material, wherein the first anode structure layer is disposed between the current collector and the second anode structure layer, and the first framework material has a higher oxidation-reduction potential for lithium ion or electronic conductivity than the second framework material. When the anode with double-layer structure provided by the present application is charged, the space utilization ratio of the anode can be enhanced, the rate capability of the electrochemical device can be enhanced, the formation of lithium dendrites may be inhibited, and the volume change amount of the anode can be reduced, thereby enhancing the safety performance and cycle performance of the electrochemical device.

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：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.