公开(公告)号：US20230268505A1

公开(公告)日：2023-08-24

申请号：US18138742

申请日：2023-04-25

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Baida DENG ,  Meng KANG ,  Chen ZENG ,  Libing HE

IPC: H01M4/583 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/58 ,  H01M4/04

CPC classification number: H01M4/583 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/5825 ,  H01M4/0471 ,  H01M2004/027

Abstract: This application provides a negative electrode active material and a preparation method thereof. The negative electrode active material may be self-embedded graphite composed of graphite A and graphite B, where the surface of the graphite A may have a tenon structure, the surface of the graphite B may have a mortise structure, the tenon structure of the graphite A and the mortise structure of the graphite B may be mutually embedded, and a hydrogen bond may be formed between the tenon structure of the graphite A and the mortise structure of the graphite B.