公开(公告)号：US20240262712A1

公开(公告)日：2024-08-08

申请号：US18639987

申请日：2024-04-19

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jingpeng Fan ,  Zhenguo Zhang ,  Na Liu ,  Qi Wu ,  Qiang Chen ,  Dong Zhao ,  Jing Wang

IPC: C01G53/00

CPC classification number: C01G53/54 ,  C01P2002/32 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/40

Abstract: Provided is a spinel lithium nickel manganese oxide material, in which an XRD pattern of the spinel lithium nickel manganese oxide material satisfies: 0

公开(公告)号：US20230299276A1

公开(公告)日：2023-09-21

申请号：US18323423

申请日：2023-05-25

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Dong Zhao ,  Qi Wu ,  Qiang Chen ,  Jingpeng Fan ,  Jing Wang ,  Na Liu

IPC: H01M4/36 ,  H01M4/58 ,  H01M4/587 ,  H01M4/04

CPC classification number: H01M4/366 ,  H01M4/5825 ,  H01M4/587 ,  H01M4/0471 ,  H01M2004/028

Abstract: A positive electrode active material and a preparation method thereof, a secondary battery, and an electric apparatus are provided. The positive electrode active material in the present invention includes: a core, where the core is a lithium-containing phosphate; a first coating layer disposed on at least part of surface of the core, where the first coating layer is a carbon coating layer co-doped with titanium and nitrogen; and a second coating layer disposed on at least part of surface of the first coating layer, where the second coating layer includes Li1+xMxTi2−x(PO4)3, where M is at least one element selected from aluminum, lanthanum, indium, zirconium, gallium, and scandium, and 0.2≤x≤0.8. With use of the positive electrode active material of the present invention, a high discharge capacity, excellent rate performance, and excellent cycling performance can be achieved.

公开(公告)号：US11881582B2

公开(公告)日：2024-01-23

申请号：US18323423

申请日：2023-05-25

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Dong Zhao ,  Qi Wu ,  Qiang Chen ,  Jingpeng Fan ,  Jing Wang ,  Na Liu

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/58 ,  H01M4/587 ,  H01M4/02

CPC classification number: H01M4/366 ,  H01M4/0471 ,  H01M4/587 ,  H01M4/5825 ,  H01M2004/021 ,  H01M2004/028

Abstract: A positive electrode active material and a preparation method thereof, a secondary battery, and an electric apparatus are provided. The positive electrode active material in the present invention includes: a core, where the core is a lithium-containing phosphate; a first coating layer disposed on at least part of surface of the core, where the first coating layer is a carbon coating layer co-doped with titanium and nitrogen; and a second coating layer disposed on at least part of surface of the first coating layer, where the second coating layer includes Li1+xMxTi2−x(PO4)3, where M is at least one element selected from aluminum, lanthanum, indium, zirconium, gallium, and scandium, and 0.2≤x≤0.8. With use of the positive electrode active material of the present invention, a high discharge capacity, excellent rate performance, and excellent cycling performance can be achieved.

公开(公告)号：US20240387819A1

公开(公告)日：2024-11-21

申请号：US18786584

申请日：2024-07-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qiang Chen ,  Qi Wu ,  Huan Ni ,  Chongheng Shen ,  Shuxing Huan ,  Dong Zhao ,  Jingpeng Fan ,  Jing Wang ,  Na Liu

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/04 ,  H01M4/36 ,  H01M4/505

Abstract: The present application provides a positive electrode active material and a preparation method thereof. The positive electrode active material of the present application has high compaction density, improved structural stability, high filling degree among particles, good dispersibility, and good material processing performance, which can effectively improve the energy density of a battery, and improve the cycling performance and safety performance of the battery. The present application further provides a secondary battery, a battery module, a battery pack, and an electrical device including the positive electrode active material.