公开(公告)号：US11967718B2

公开(公告)日：2024-04-23

申请号：US18073884

申请日：2022-12-02

Applicant: Ningde Amperex Technology Limited

Inventor： Lihong He ,  Jia Tang ,  Jiali Dong ,  Yuansen Xie

IPC: H01M4/587 ,  C01B32/20 ,  H01M4/02

CPC classification number: H01M4/587 ,  C01B32/20 ,  C01P2002/74 ,  C01P2002/82 ,  C01P2004/03 ,  C01P2006/40 ,  H01M2004/021 ,  H01M2004/027

Abstract: A negative active material includes a carbon material. The carbon material satisfies the following relationship: 6

公开(公告)号：US11936045B2

公开(公告)日：2024-03-19

申请号：US18173295

申请日：2023-02-23

Applicant: Ningde Amperex Technology Limited

Inventor： Lihong He ,  Jia Tang ,  Jiali Dong ,  Yuansen Xie

IPC: H01M4/587 ,  C01B32/20 ,  H01M4/02

CPC classification number: H01M4/587 ,  C01B32/20 ,  C01P2002/74 ,  C01P2002/82 ,  C01P2004/03 ,  C01P2006/40 ,  H01M2004/021 ,  H01M2004/027

Abstract: A negative active material includes a carbon material. The carbon material satisfies the following relationship: 6

公开(公告)号：US20230049766A1

公开(公告)日：2023-02-16

申请号：US17963564

申请日：2022-10-11

Applicant: Ningde Amperex Technology Limited

Inventor： Jia Tang ,  Lihong He ,  Pengyang Feng ,  Yuansen Xie

IPC: H01M4/04 ,  H01M50/46

Abstract: A negative electrode active material having a specific aspect ratio and sphericity in a cumulative particle volume distribution. When tested by using a dynamic particle image analyzer, when a cumulative particle volume distribution of the negative electrode active material is 10%, an aspect ratio AR10 of the negative electrode active material satisfies 0.4≤AR10≤0.55, and a sphericity S10 of the negative electrode active material satisfies 0.48≤S10≤0.60. The negative electrode active material improves rate performance, dynamics performance, and a deformation problem of the electrochemical apparatus.