abstract |
A porous substrate; And a porous adhesive layer formed on one or both sides of the porous substrate, wherein the porous adhesive layer comprises: A polyvinylidene fluoride (PVdF) polymer fine particle having an average particle diameter of 200 nm to 700 nm, and a nitrogen-containing binder, wherein the total thickness of the porous adhesive layer is 1 탆 or less, a method for producing the same, The present invention relates to a secondary battery. |