公开(公告)号：US20240145685A1

公开(公告)日：2024-05-02

申请号：US18399235

申请日：2023-12-28

Applicant: Zhuhai CosMX Battery Co., Ltd.

Inventor： Fan YANG ,  Yanyun ZHAI ,  Jian ZHANG ,  Kongyan XIE ,  Fen LIU ,  Jinshuai YANG ,  Chong PENG

IPC: H01M4/36 ,  H01M4/131 ,  H01M4/136 ,  H01M4/62 ,  H01M10/42

CPC classification number: H01M4/366 ,  H01M4/131 ,  H01M4/136 ,  H01M4/623 ,  H01M4/625 ,  H01M10/4235 ,  H01M2004/021

Abstract: This application provides an electrode sheet and an electrochemical device. The electrode sheet includes a current collector and a functional coating located on at least one surface of the current collector. The functional coating includes a first coating, a second coating and an active material layer that are sequentially stacked on a surface of the current collector. The first coating includes a conductive agent, a binder and a first functional filler, and the second coating includes a conductive agent, a binder and a second functional filler. A mass ratio of the binder in the first coating to the first coating is a1, a mass ratio of the binder in the second coating to the second coating is a2, and a mass ratio of the binder in the active material layer to the active material layer is a3, and a1>a2>a3.