公开(公告)号：EP4261922A1

公开(公告)日：2023-10-18

申请号：EP21903230.7

申请日：2021-11-29

申请人： Zeon Corporation

发明人： OGIHARA Tasuku

IPC分类号： H01M4/13 ,  H01G11/06 ,  H01G11/26 ,  H01G11/52 ,  H01M50/403 ,  H01M50/414 ,  H01M50/431 ,  H01M50/443 ,  H01M50/446

摘要： A composition for an electrochemical device functional layer contains a particulate polymer, a binder, and heat-resistant fine particles. The particulate polymer has a core-shell structure including a core portion formed of a polymer A and a shell portion formed of a polymer B that at least partially covers an outer surface of the core portion, with the polymer A and the polymer B being different from each other. The particulate polymer also has an electrolyte solution contact angle of not less than 0° and not more than 35° and a volume-average particle diameter of not less than 1.0 µm and not more than 10.0 µm.