| abstract |
And a heat resistant layer disposed on at least one side of the porous substrate, wherein the heat resistant layer includes an acrylic binder, an adhesive binder, and a filler, wherein the acrylic binder is a (meth) acrylate or , A cyano group-containing unit, and a sulfonate group-containing unit, and the adhesive binder includes a unit derived from styrene, and a lithium secondary battery comprising the same. |