公开(公告)号：EP4411911A1

公开(公告)日：2024-08-07

申请号：EP22874947.9

申请日：2022-09-28

申请人： China Petroleum & Chemical Corporation ,  Shanghai Research Institute of Petrochemical Technology SINOPEC

发明人： YANG, Weimin ,  LI, Jun ,  WANG, Zhendong ,  WANG, Xiaofei ,  LAN, Dawei ,  ZHANG, Daoming ,  XUE, Haoliang ,  ZHOU, Sifei

IPC分类号： H01M10/052

CPC分类号： Y02E60/10 ,  H01M10/052 ,  H01M50/403 ,  H01M50/491 ,  H01M50/449

摘要： Disclosed are a separator for a lithium-sulfur battery, a method for preparing the same and a lithium-sulfur battery containing the same. The separator comprises: a polymeric substrate film; and a composite layer on one surface of the polymeric substrate film, wherein the composite layer comprises a SCM molecular sieve and a conductive carbon material, wherein the SCM molecular sieve is selected from SCM-14 and SCM-15, and preferably, the SCM molecular sieve further contains cobalt. The separator in accordance with the present disclosure can effectively suppress the shuttle of polysulfides in lithium-sulfur batteries, and thereby reduce side reactions within the batteries, lower the self-discharge rate of lithium-sulfur batteries, and improve the cycling performances, rate performances, and storage life of the batteries.