SEPARATOR, PREPARATION METHOD THEREOF, SECONDARY BATTERY, AND ELECTRIC APPARATUS
Application
US20260081238A1
Kind: A1
Mar 19, 2026
Assignee
Contemporary Amperex Technology Co., Limited
Inventors
Yao GUO, Hailin ZOU, Xilin LUO, Peipei CHEN
Abstract
Embodiments of the present application provide a separator, a preparation method thereof, a secondary battery, and an electric apparatus. The separator includes a first base film, a coating, and a second base film, where the coating is disposed between the first base film and the second base film, the coating includes an ion-trapping agent, and a reduction potential of the ion-trapping agent relative to lithium metal is 0 V to 2 V. A secondary battery containing the separator exhibits improved cycling performance.
CPC Classifications
H01M 10/4235
H01M 50/403
H01M 50/42
H01M 50/426
H01M 50/434
H01M 50/443
H01M 50/446
H01M 50/449
B60L 50/60
H01M 2220/20
Filing Date
2025-11-26
Application No.
19401360