Separator for Electrochemical Device and Electrochemical Device Comprising the Same

Abstract

The present disclosure relates to a separator for an electrochemical device comprising an inorganics-containing porous layer on at least one surface of a porous polymer support, and comprising inorganic fillers and a binder polymer, wherein the binder polymer comprises a first binder polymer, and the first binder polymer is poly(vinylidene fluoride-co-hexafluoropropylene) having a tan δ peak at −18° C. to −5° C. when measured by Dynamic Mechanical Analysis, and an electrochemical device comprising the same. The separator for an electrochemical device according to an embodiment of the present disclosure has improved adhesion property with electrode and safety at high temperature.

Dependencies are inferred from the claim text.