abstract |
a porous substrate having a plurality of pores; and a pair of porous coating layers formed on at least one surface of the porous substrate and including a plurality of inorganic particles and a binder positioned on some or all of the surfaces of the inorganic particles to connect and fix the inorganic particles, , the weight of the binder with respect to the total weight of the porous coating layer is 5 to 40% by weight, the inorganic particles include boehmite particles, the binder includes a fluorine-based binder and a rubber-based binder, the fluorine-based binder and the rubber-based binder A separator having a weight ratio of 80:20 to 99.9:0.1 and an electrochemical device including the same are provided. |