Separator comprising an adhesion layer for an electrochemical device and an electrode assembly comprising the same

A separator having an adhesion layer on at least an outmost surface for an electrochemical device, comprising:

• a porous substrate;
• and
• a porous coating layer formed on at least one surface of the porous substrate, the porous coating layer comprising a mixture of inorganic particles and a binder resin;
• the adhesion layer is formed on either a surface of the porous substrate where a porous coating layer is not formed, or a surface of the porous coating layer if the surface of the porous substrate is coated with the porous coating layer,
• wherein the adhesion layer comprises a first layer contacting surface of the separator and a second layer formed on surface of the first layer and contacting an electrode, and the first layer comprises a low-melting point polymer resin, and
• the second layer comprises a polymer resin having a lower dissolution rate in an electrolyte solution for an electrochemical device than the polymer resin included in the first layer.