| abstract |
And a heat resistant layer disposed on at least one side of the porous substrate, wherein the heat resistant layer includes an acrylic heat resistant binder, a binder, and a filler, wherein the acrylic heat resistant binder is a (meth) acrylate or A cyano group-containing structural unit and a sulfonate group-containing structural unit, wherein the binder binder includes a structural unit comprising a hydroxy group, a structural unit containing an acetate group, and a structural unit containing an alkali metal And a lithium secondary battery including the separator. |