公开(公告)号：US20250015273A1

公开(公告)日：2025-01-09

申请号：US18824084

申请日：2024-09-04

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wei ZHENG ,  Baozhen WU ,  Yuwen WANG ,  Xingyan YOU ,  Wenlong BAI

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/04 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/583 ,  H01M4/62 ,  H01M10/0525

Abstract: Disclosed are an electrode, a preparation method therefor, a battery, and a power consuming device. The electrode according to an embodiment of the present application comprises a current collector and active layers bonded to the current collector, wherein the active layers include a first active layer and a second active layer, the first active layer is bonded to the current collector, the second active layer is bonded to the surface of the first active layer that faces away from the current collector, and the second active layer has a porosity lager than that of the first active layer. The electrode has a high energy density and structural stability and an excellent cycling performance, resulting in a safe battery. The method for preparing an electrode as disclosed results in an electrode with a stable structure and electrochemical performance, and a high efficiency, while saving the production cost.