公开(公告)号：US20250015250A1

公开(公告)日：2025-01-09

申请号：US18888349

申请日：2024-09-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Daichun TANG ,  Yaxi TIAN ,  Xitong WANG ,  Tingzhen JI ,  Yurun XIA ,  Xiangyan CHEN

IPC: H01M4/04 ,  H01M4/02 ,  H01M10/0525

Abstract: The present application provides a negative electrode plate and the method for preparing the same, a secondary battery, and an electrical device. The negative electrode plate includes a negative electrode current collector, and a negative electrode film layer arranged on at least one surface of the negative electrode current collector, wherein the negative electrode film layer comprises infiltrating cavity which opens in a direction away from the negative electrode current collector and extend in a first direction; and wherein the negative electrode film layer has a dimension in the first direction denoted as A in μm, the infiltrating cavity has a dimension in the first direction denoted as A1 in μm, and the negative electrode plate satisfies 0.1≤A1/A≤1, and optionally, 0.2≤A1/A≤1.