公开(公告)号：US20220302555A1

公开(公告)日：2022-09-22

申请号：US17646925

申请日：2022-01-04

Applicant: LG ELECTRONICS INC.

Inventor： Dongwook Lee ,  Munhyuk Lim ,  Hongjung Kim ,  Kyungho Jung ,  Juchul Lee ,  Junhan Kwon ,  Keeyong Kim ,  Sumin Lee ,  Yongkeon Ahn ,  Youngmin Pi

IPC: H01M50/429 ,  H01M50/44 ,  H01M50/403 ,  H01M50/446

Abstract: Disclosed are a separator for a lithium ion secondary battery, a method for producing the same, and a secondary battery using the same. A separator structure includes a support disposed inside a secondary battery. The support includes a porous polymer matrix, cellulose nano fibers dispersed in the matrix, and inorganic additives dispersed in the matrix, wherein at least some of the inorganic additives are attached to the cellulose nano fibers and are distributed in the matrix.