公开(公告)号：WO2022196902A1

公开(公告)日：2022-09-22

申请号：PCT/KR2021/019726

申请日：2021-12-23

申请人： LG ELECTRONICS INC.

发明人： LEE, Dongwook ,  LIM, Munhyuk ,  KIM, Hongjung ,  JUNG, Kyungho ,  LEE, Juchul ,  KWON, Junhan ,  KIM, Keeyong ,  LEE, Sumin ,  AHN, Yongkeon ,  PI, Youngmin

IPC分类号： H01M50/403 ,  H01M50/446 ,  H01M50/429 ,  C08B1/00 ,  C08B3/06 ,  H01M50/44 ,  B82Y40/00

摘要： 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.