公开(公告)号：US20240213474A1

公开(公告)日：2024-06-27

申请号：US18601234

申请日：2024-03-11

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: 6.1

公开(公告)号：US20240243284A1

公开(公告)日：2024-07-18

申请号：US18621601

申请日：2024-03-29

Applicant: Ningde Amperex Technology Limited

Inventor： Jia TANG ,  Jiali DONG ,  Lihong HE ,  Yuansen XIE

IPC: H01M4/583 ,  H01M4/02 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569

CPC classification number: H01M4/583 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2300/0051

Abstract: A negative electrode material layer includes a negative electrode active material, the negative electrode active material includes graphite, and (d1/d2−1)×100%≤0.56% and 3.3600≤d1≤3.3720 are satisfied; where d1 Å is an interplanar spacing of (002) crystal plane of the negative electrode active material obtained by sintering the negative electrode material layer tested by an X-ray diffractometer, and d2 Å is an interplanar spacing of the (002) crystal plane of the negative electrode active material in the negative electrode material layer tested by the X-ray diffractometer. The negative electrode plate of the electrochemical apparatus provided in this application has low swelling rate during cycling, so that the electrochemical apparatus also has low swelling rate during cycling.

公开(公告)号：US20230261189A1

公开(公告)日：2023-08-17

申请号：US18193996

申请日：2023-03-31

Applicant: Ningde Amperex Technology Limited

Inventor： Jia TANG ,  Lihong HE ,  Yuansen XIE

IPC: H01M4/583 ,  H01M10/0525

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

Abstract: An anode active material, a secondary battery, and an electrical device. The particles of the anode active material meet the following relationships: 0.1≤AR10

公开(公告)号：US20230100932A1

公开(公告)日：2023-03-30

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

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

公开(公告)号：US20230052908A1

公开(公告)日：2023-02-16

申请号：US17971811

申请日：2022-10-24

Applicant: Ningde Amperex Technology Limited

Inventor： Wenbo JIN ,  Jiali DONG ,  Lihong HE ,  Yuansen XIE

IPC: H01M4/583 ,  H01M4/04

Abstract: A negative electrode active material includes a carbon material, where the carbon material has a specific degree of graphitization and aspect ratio distribution. A degree of graphitization Gr of the carbon material measured by an X-ray diffraction analysis method is 0.82 to 0.92, and based on a total quantity of particles of the carbon material, a proportion of particles with an aspect ratio greater than 3.3 in the carbon material is less than 10%. The negative electrode active material helps to improve cycle performance of the electrochemical apparatus. FIG. 1.

公开(公告)号：US20230299277A1

公开(公告)日：2023-09-21

申请号：US18324419

申请日：2023-05-26

Applicant: Ningde Amperex Technology Limited

Inventor： Wenbo JIN ,  Jiali DONG ,  Lihong HE ,  Yuansen XIE

IPC: H01M4/36 ,  H01M10/0525 ,  H01M10/0566

CPC classification number: H01M4/366 ,  H01M10/0525 ,  H01M10/0566 ,  H01M2004/021

Abstract: An electrochemical apparatus includes an electrolyte and a negative electrode plate. The negative electrode plate includes a negative electrode current collector and a negative electrode active material layer disposed on at least one surface of the negative electrode current collector. The negative electrode active material layer contains a negative electrode active material, and a tortuosity T of the negative electrode active material layer satisfies the following relation: 1

公开(公告)号：US20230197958A1

公开(公告)日：2023-06-22

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

CPC classification number: H01M4/587 ,  C01B32/20 ,  H01M2004/021

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