公开(公告)号：US11978922B2

公开(公告)日：2024-05-07

申请号：US17319930

申请日：2021-05-13

Applicant: LG ELECTRONICS INC.

Inventor： Eunja Lim ,  Hongcheol Lee ,  Eunseck Kang ,  Juchul Lee ,  Koun Park ,  Misun Lee

IPC: H01M50/429 ,  H01M50/403 ,  H01M50/431 ,  H01M50/449

CPC classification number: H01M50/4295 ,  H01M50/403 ,  H01M50/431 ,  H01M50/449

Abstract: The present disclosure is applicable to the technical field related to a secondary battery, and relates to, for example, a separator structure for the secondary battery, a method for preparing the same, and the secondary battery using the same. A separator structure disposed inside a secondary battery includes a porous support body including a first face and a second face, and a cellulose nano fiber subjected to an ionic surface treatment located on at least one of the first face and the second face of the support body.