公开(公告)号：US20230307648A1

公开(公告)日：2023-09-28

申请号：US18202487

申请日：2023-05-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Cong CHENG ,  Junguang CHEN ,  Haile PEI ,  Shengwu ZHANG ,  Xinghui WANG ,  Ning WANG

IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/58 ,  H01M4/505 ,  H01M4/525

CPC classification number: H01M4/622 ,  H01M10/0525 ,  H01M4/625 ,  H01M4/5825 ,  H01M4/505 ,  H01M4/525 ,  H01M2220/20 ,  H01M2004/028

Abstract: The present application relates to an aqueous positive electrode sheet, which may include a current collector and a positive electrode active substance layer provided on at least one surface of the current collector, the positive electrode active substance layer may include an aqueous binder, where the porosity of a surface area of the positive electrode active substance layer may be greater than the porosity of an inner area of the positive electrode active substance layer, and the average particle size of the positive electrode active material in the surface area may be greater than the average particle size of the positive electrode active material in the inner area. The present application further relates to a secondary battery including the aqueous positive electrode sheet, a battery pack including the secondary battery, and a power consumption apparatus including the battery pack.

公开(公告)号：US20240313224A1

公开(公告)日：2024-09-19

申请号：US18617506

申请日：2024-03-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Junguang CHEN ,  Cong CHENG ,  Haile PEI ,  Shengwu ZHANG ,  Xinghui WANG ,  Shisong LI

IPC: H01M4/62 ,  H01M4/02

CPC classification number: H01M4/622 ,  H01M2004/021 ,  H01M2004/028

Abstract: An electrode assembly includes a water-based positive electrode plate and a negative electrode plate, wherein the water-based positive electrode plate includes a positive electrode current collector and a positive electrode film layer located on at least one surface of the positive electrode current collector; and the negative electrode plate comprises a negative electrode current collector and a negative electrode film layer located on at least one surface of the negative electrode current collector; at least part of surface of the water-based positive electrode plate is provided with a plurality of first micropores, and satisfies: 0.001%≤(S12×H12×D1)/(S11×C1×H11)≤1%, at least part of surface of the negative electrode plate is provided with a plurality of second micropores, and satisfies: 0

公开(公告)号：US20240186510A1

公开(公告)日：2024-06-06

申请号：US18442435

申请日：2024-02-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haile PEI ,  Cong CHENG ,  Junguang CHEN ,  Shengwu ZHANG ,  Xinghui WANG ,  Yanying WU

IPC: H01M4/58 ,  H01M4/02 ,  H01M4/04 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/052

CPC classification number: H01M4/5825 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/622 ,  H01M10/052 ,  H01M2004/028

Abstract: A positive electrode active material composition, a water-based positive electrode slurry, a positive electrode plate, a secondary battery, and an electrical device are disclosed. The positive electrode active material composition includes a first positive electrode active material, a second positive electrode active material, and a third positive electrode active material, the first positive electrode active material has a volume average particle size Dv50 denoted as A1 in μm, with A1 satisfying 0.2≤A1≤0.8; the second positive electrode active material has a volume average particle size Dv50 denoted as A2 in μm, with A2 satisfying 1.0≤A2≤2.5; and the third positive electrode active material has a volume average particle size Dv50 denoted as A3 in μm, with A3 satisfying 3.0≤A3≤6.0. The positive electrode plate of the present application has both a higher compaction density and a lower water content.

公开(公告)号：US20240030437A1

公开(公告)日：2024-01-25

申请号：US18449921

申请日：2023-08-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Junguang CHEN ,  Cong CHENG ,  Haile PEI ,  Bingzi YANG ,  Xinghui WANG ,  Shengwu ZHANG

IPC: H01M4/58 ,  H01M4/525 ,  H01M4/505 ,  H01M4/62 ,  H01M4/04 ,  H01M10/0525

CPC classification number: H01M4/5825 ,  H01M4/525 ,  H01M4/505 ,  H01M4/622 ,  H01M4/625 ,  H01M4/0404 ,  H01M10/0525 ,  H01M2004/028

Abstract: This application provides a positive electrode slurry including a solid inclusion and water, where the solid inclusion includes a positive electrode active material capable of intercalating and deintercalating lithium ions and lithium-containing graphene.

公开(公告)号：US20230361305A1

公开(公告)日：2023-11-09

申请号：US18324680

申请日：2023-05-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Cong CHENG ,  Haile PEI ,  Junguang CHEN ,  Shengwu ZHANG ,  Xinghui WANG ,  Shisong LI

IPC: H01M4/62 ,  H01M4/58 ,  H01M4/66 ,  H01M10/0525 ,  H01M4/136

CPC classification number: H01M4/622 ,  H01M4/136 ,  H01M4/5825 ,  H01M4/625 ,  H01M4/661 ,  H01M10/0525 ,  H01M2004/028

Abstract: The present application relates to an aqueous positive electrode sheet, including a current collector and a positive electrode active substance layer provided on at least one surface of the current collector, the positive electrode active substance layer including an aqueous binder, where bond strength AT between the positive electrode active substance layer and the current collector and cohesive CT of the positive electrode active substance layer itself satisfy the following relationship: 1≤CT/AT≤10. The present application further relates to a secondary battery including the aqueous positive electrode sheet, a battery pack including the secondary battery, and a power consumption apparatus including the battery pack.