公开(公告)号：US20250105300A1

公开(公告)日：2025-03-27

申请号：US18973563

申请日：2024-12-09

Applicant: Ningde Amperex Technology Limited

Inventor： Kefei WANG ,  Zhen DAI ,  Yingying WANG ,  Feng ZHOU

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0569

Abstract: An electrochemical device, including a cathode, an anode and an electrolyte, wherein the anode includes an anode active material layer, wherein the contact angle of the anode active material layer relative to a non-aqueous solvent is not greater than 60° as measured by a contact angle measurement. The electrochemical device of the present application has improved cycle performance.

公开(公告)号：US20240356012A1

公开(公告)日：2024-10-24

申请号：US18758271

申请日：2024-06-28

Applicant: Ningde Amperex Technology Limited

Inventor： Bing JIANG ,  Feng ZHOU ,  Qingwen ZHANG

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/04 ,  H01M4/583 ,  H01M10/0525

CPC classification number: H01M4/366 ,  H01M4/0416 ,  H01M4/583 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027

Abstract: An electrochemical device includes a negative electrode. The negative electrode includes a negative current collector and a negative active material layer disposed on at least one surface of the negative current collector. In an infrared spectroscopy test, the negative active material layer exhibits at least a first peak and a second peak in a wavenumber range of 2500 cm−1 to 3200 cm−1. This indicates that the negative active material layer contains an additive, and the additive increases the production efficiency of the negative electrode, thereby increasing the production efficiency of the electrochemical device. In addition, the electrochemical device exhibits a high discharge capacity.

公开(公告)号：US20240136535A1

公开(公告)日：2024-04-25

申请号：US18539272

申请日：2023-12-14

Applicant: Ningde Amperex Technology Limited

Inventor： Changchao DU ,  Kefei WANG ,  Feng ZHOU ,  Qingwen ZHANG

IPC: H01M4/66 ,  H01M4/133 ,  H01M10/0525

CPC classification number: H01M4/663 ,  H01M4/133 ,  H01M4/667 ,  H01M10/0525 ,  H01M2004/027

Abstract: An electrochemical device includes a negative electrode sheet. The negative electrode sheet includes a current collector, a first coating layer, and a second coating layer. The first coating layer is located between the current collector and the second coating layer. The second coating layer includes a negative active material. The first coating layer includes a conductive carbon material. The conductive carbon material includes at least one of carbon nanotubes or graphene. Based on a mass of the first coating layer, a mass percent of the conductive carbon material is 20% to 60%. The main material of the first coating layer is at least one of carbon nanotubes or graphene.

公开(公告)号：US20240274801A1

公开(公告)日：2024-08-15

申请号：US18436115

申请日：2024-02-08

Applicant: Ningde Amperex Technology Limited

Inventor： Bing JIANG ,  Tao LIU ,  Feng ZHOU ,  Qingwen ZHANG

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/139 ,  H01M10/0525 ,  H01M50/536

CPC classification number: H01M4/366 ,  H01M4/139 ,  H01M10/0525 ,  H01M50/536 ,  H01M2004/021

Abstract: An electrochemical device includes a first electrode plate, a second electrode plate, and a separator disposed between the first electrode plate and the second electrode plate. The first electrode plate includes a current collector, a tab, and an active layer. The tab is electrically connected to and extends out of the current collector. The active layer is disposed on a surface of the current collector. The active layer includes a first active layer and a second active layer. In a first direction, the first active layer is located on a side of the second active layer facing the tab, and is adjacent to or partially overlaps the second active layer. In a second direction, the first active layer and the second active layer extend in a strip shape. The cohesive force of the first active layer is greater than the cohesive force of the second active layer.

公开(公告)号：US20240234741A9

公开(公告)日：2024-07-11

申请号：US18539272

申请日：2023-12-14

Applicant: Ningde Amperex Technology Limited

Inventor： Changchao DU ,  Kefei WANG ,  Feng ZHOU ,  Qingwen ZHANG

IPC: H01M4/66 ,  H01M4/133 ,  H01M10/0525

CPC classification number: H01M4/663 ,  H01M4/133 ,  H01M4/667 ,  H01M10/0525 ,  H01M2004/027

Abstract: An electrochemical device includes a negative electrode sheet. The negative electrode sheet includes a current collector, a first coating layer, and a second coating layer. The first coating layer is located between the current collector and the second coating layer. The second coating layer includes a negative active material. The first coating layer includes a conductive carbon material. The conductive carbon material includes at least one of carbon nanotubes or graphene. Based on a mass of the first coating layer, a mass percent of the conductive carbon material is 20% to 60%. The main material of the first coating layer is at least one of carbon nanotubes or graphene.

公开(公告)号：US20230155132A1

公开(公告)日：2023-05-18

申请号：US16970789

申请日：2019-12-25

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Kefei WANG ,  Zhen DAI ,  Yingying WANG ,  Feng ZHOU

IPC: H01M4/62 ,  H01M4/587 ,  H01M10/0569 ,  H01M10/0525

CPC classification number: H01M4/628 ,  H01M4/587 ,  H01M10/0569 ,  H01M10/0525 ,  H01M2004/027

Abstract: An electrochemical device including a cathode, an anode and an electrolyte. The anode includes an anode active material layer, and the contact angle of the anode active material layer relative to a non-aqueous solvent is not greater than 60° as measured by a contact angle measurement. The electrochemical device has improved cycle performance.