| abstract |
A porous substrate, and a coating layer disposed on one or both surfaces of the porous substrate, the coating layer comprising: (A) a filler having an average particle diameter of 0.3 to 2 탆; And a binder containing (B) an inorganic particle, an organic particle or a combination thereof, and an organic polymer, wherein the inorganic particles and the organic particles have a mean particle size of 5 nm to 200 nm and a lithium The present invention relates to a secondary battery. |