公开(公告)号：US20230361273A1

公开(公告)日：2023-11-09

申请号：US18354618

申请日：2023-07-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huihui LIU ,  Lingyun FENG ,  Yanhuang FAN ,  Lianwei DUAN

IPC: H01M4/136 ,  H01M4/58 ,  H01M4/36 ,  H01M4/583 ,  H01M4/62

CPC classification number: H01M4/136 ,  H01M4/5825 ,  H01M4/366 ,  H01M4/583 ,  H01M4/622 ,  H01M4/625 ,  H01M2004/028

Abstract: A positive electrode plate includes a positive electrode current collector, a positive electrode film layer arranged on at least one surface of the positive electrode current collector, and a conductive undercoat layer positioned between the positive electrode current collector and the positive electrode film layer. The positive electrode film layer includes a positive electrode active material including an inner core and a shell coating the inner core. The shell includes a first coating layer coating the inner core, a second coating layer coating the first coating layer, and a third coating layer coating the second coating layer. The conductive undercoat layer includes a polymer, an aqueous binder, and a conductive agent.

公开(公告)号：US20230420680A1

公开(公告)日：2023-12-28

申请号：US18243118

申请日：2023-09-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lianwei DUAN ,  Huihui LIU

IPC: H01M4/62 ,  H01M4/58

CPC classification number: H01M4/622 ,  H01M4/5825 ,  H01M2004/028

Abstract: The present application provides a binder and a preparation method therefor, a secondary battery, a battery module, a battery pack and a power consuming device. The binder may comprise a copolymer C, and the copolymer C may comprise a structural unit derived from a monomer containing a cyano group, a structural unit derived from a monomer containing an ester group, and a structural unit derived from a monomer containing a group shown in formula I, in which n is selected from 0, 1, 2, or 3: