| abstract |
The present invention is a porous polymer substrate; A porous organic-inorganic coating layer formed on at least one surface of the porous polymer substrate and comprising thermally conductive inorganic particles and core-shell particles, wherein the particles are bound by a binder polymer, wherein the core-shell particles include a core part and a shell part surrounding the surface of the core part, wherein the core part comprises a metal hydroxide having heat absorbing properties at 150 ° C to 400 ° C, and the shell part contains a polymer resin, wherein the polymer resin is a water-insoluble polymer, Or it provides a separator for an electrochemical device, characterized in that it is a crosslinked polymer, and an electrochemical device comprising the same. The present invention can provide a separator having improved heat absorption effect and improved safety due to the above-described structural features, and an electrochemical device including the same. |