SEPARATOR FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

The present invention relates to a separator for a lithium secondary battery, and a lithium secondary battery comprising same, which comprise a porous base material and a coating layer positioned on at least one surface of the porous base material, wherein the coating layer comprises a first inorganic particle, a second inorganic particle, and a binder comprising a (meth)acrylic copolymer comprising a first structure unit derived from (meth)acrylamide, and a second structure unit comprising at least one of a structure unit derived from (meth)acrylic acid or (meth)acrylate, and a structure unit derived from a (meth)acrylamidosulfonic acid or a salt thereof, the average diameter of the first inorganic particle is 400 to 600 nm, and the average diameter of the second inorganic particle is smaller than the average diameter of the first inorganic particle. 本发明涉及用于锂二次电池的隔板和包括其的锂二次电池。隔板包括多孔基板，和在多孔基板的至少一个表面上的涂层，其中涂层包括包含(甲基)丙烯酸共聚物的粘结剂，该(甲基)丙烯酸共聚物包括源自(甲基)丙烯酰胺的第一结构单元以及包括源自(甲基)丙烯酸或(甲基)丙烯酸酯的结构单元和源自(甲基)丙烯酰胺基磺酸或其盐的结构单元中的至少一