| abstract |
A porous substrate, and a coating layer positioned on at least one surface of the porous substrate, wherein the coating layer is a first structural unit derived from (meth)acrylamide, and a structure derived from (meth)acrylic acid or (meth)acrylate A binder comprising a (meth)acrylic copolymer comprising a second structural unit comprising at least one of a unit and a structural unit derived from (meth)acrylamidosulfonic acid or a salt thereof; First inorganic particles; And a second inorganic particle, wherein an average particle diameter of the first inorganic particles is 400 to 600 nm, and an average particle diameter of the second inorganic particles is smaller than an average particle diameter of the first inorganic particles, and a separator for a lithium secondary battery, and It relates to a lithium secondary battery containing. |