公开(公告)号：US20240322172A1

公开(公告)日：2024-09-26

申请号：US18613168

申请日：2024-03-22

Applicant: Ningde Amperex Technology Limited

Inventor： Zigui ZHENG ,  Zheng YI ,  Fujin TAN ,  Yuansen XIE

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

CPC classification number: H01M4/587 ,  H01M2004/021 ,  H01M2004/027 ,  H01M10/0525

Abstract: A hard carbon material has a pore structure. A scattering vector of the pore structure in a small-angle X-ray scattering spectrum is N1 nm−1, and 0.1≤N1≤7. The hard carbon material exhibits a scattering intensity convex peak. A full-width-at-half-maximum of the convex peak is L1 nm−1, and 0.1≤L1≤3.5. A pore volume of micropores of the hard carbon material measured by a nitrogen adsorption method is V2 cc/g, and 0

公开(公告)号：US20250002356A1

公开(公告)日：2025-01-02

申请号：US18757936

申请日：2024-06-28

Applicant: Ningde Amperex Technology Limited

Inventor： Wenlong SHAO ,  Zheng YI ,  Fujin TAN ,  Yuansen XIE

IPC: C01B32/318 ,  C01B32/168 ,  C01B32/336 ,  H01M4/02 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/62

Abstract: A porous carbon material includes carbon nanotubes and carbon material particles, a particle elastic modulus of the porous carbon material is Y1, and 0.9 Gpa≤Y1≤5.0 Gpa. The porous carbon material of this application has a high particle elastic modulus and a high powder conductivity. When a silicon-carbon material prepared using the porous carbon material in this application as a skeleton is used in an electrochemical apparatus, the silicon-carbon material can have a high particle elastic modulus and powder conductivity, improving the electrochemical performance of the electrochemical apparatus such as the long cycling performance and rate performance.

公开(公告)号：US20240266537A1

公开(公告)日：2024-08-08

申请号：US18622258

申请日：2024-03-29

Applicant: Ningde Amperex Technology Limited

Inventor： Zigui ZHENG ,  Fujin TAN ,  Zheng YI ,  Yuansen XIE

IPC: H01M4/583 ,  H01M4/02 ,  H01M4/36

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

Abstract: A negative active material, a negative electrode plate containing same, an electrochemical device, and an electrical device. The negative active material includes a hard carbon material. The hard carbon material includes a plurality of micropores and an average delithiation potential vs Li/Li+ of the hard carbon material is 0.15 V to 0.40 V.

公开(公告)号：US20240239681A1

公开(公告)日：2024-07-18

申请号：US18621509

申请日：2024-03-29

Applicant: Ningde Amperex Technology Limited

Inventor： Zheng YI ,  Fujin TAN ,  Zigui ZHENG ,  Yuansen XIE

IPC: C01G9/00 ,  H01M4/02 ,  H01M4/583

CPC classification number: C01G9/006 ,  H01M4/583 ,  C01P2002/72 ,  C01P2002/82 ,  C01P2004/51 ,  C01P2004/84 ,  C01P2006/40 ,  H01M2004/027

Abstract: A hard carbon material includes a porous skeleton, a first element, and element zinc, where the first element includes at least one of element nitrogen, element sulfur, element boron, element phosphorus or element selenium. A percentage of the first element with respect to a total mass of the hard carbon material is A1%, and a percentage of element zinc with respect to the total mass of the hard carbon material is A2%, where the hard carbon material satisfies 1.5≤A1/A2≤5. When applied to an electrochemical apparatus, the hard carbon material can significantly improve the energy density of the electrochemical apparatus.

公开(公告)号：US20240113275A1

公开(公告)日：2024-04-04

申请号：US18374006

申请日：2023-09-28

Applicant: Ningde Amperex Technology Limited

Inventor： Zigui ZHENG ,  Fujin TAN ,  Zheng YI ,  Yuansen XIE

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

CPC classification number: H01M4/0471 ,  H01M4/0404 ,  H01M4/366 ,  H01M4/583 ,  H01M10/0525 ,  H01M2004/021

Abstract: A composite material includes a graphite particle. A surface of the graphite particle is provided with a first region and a second region. The first region is made of graphite, and the second region includes a hard carbon layer. A surface area of the first region is denoted as A1 μm2, and a surface area of the second region is denoted as A2 μm2, 0≤A1/A2≤9. A thickness of the hard carbon layer is H nm, 5≤H≤500. By controlling the coating amount and coating area of the hard carbon to satisfy the above relationship, this application can improve energy density, capacity performance, and the like at the same time of enhancing dynamic performance.