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公开(公告)号:US20230395938A1
公开(公告)日:2023-12-07
申请号:US18344980
申请日:2023-06-30
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor: Xing TONG , Songjun SHI , Youlei LAI , Yinghua ZHU , Jingru LI
IPC: H01M50/446 , H01M50/491 , H01M50/403
CPC classification number: H01M50/446 , H01M50/491 , H01M50/403
Abstract: Provided are a separator for a secondary battery and a preparation method therefor, and a secondary battery including the separator, a battery module, a battery pack, and a power consuming device. The separator for a secondary battery of the present application includes a substrate layer and a nanofiber layer provided on one surface of the substrate layer. The nanofiber layer includes a lithium supplementing agent, a polymer, and an optional conductive material; and in the total weight of the nanofiber layer, the content of the lithium supplementing agent accounts for 30.0-50.0% by weight, the content of the polymer accounts for 50.0-70.0% by weight, and the content of the conductive material accounts for 0-5.0% by weight.