公开(公告)号：US20240021827A1

公开(公告)日：2024-01-18

申请号：US18371479

申请日：2023-09-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Kaiming DENG ,  Lei LU ,  Yalong WANG ,  Hai JIA ,  Shunhao DAI

IPC: H01M4/62 ,  H01M4/13 ,  H01M10/0525

CPC classification number: H01M4/622 ,  H01M4/13 ,  H01M10/0525 ,  H01M2004/027

Abstract: Embodiments of the present application provide a negative electrode plate, a secondary battery, a battery module, a battery pack and an electrical device. The negative electrode plate may comprise a negative electrode current collector; and a negative electrode active material layer, wherein the negative electrode active material layer may be disposed on at least one surface of the negative electrode current collector, and comprise, based on total weight of the negative electrode active material layer, 90.0% to 98.6% by weight of a negative electrode active material; 1.0%-5.0% by weight of a polymer binder; and 0.2%-4.0% by weight of a toughening fiber.