Organic/inorganic composite microporous membrane and electrochemical device prepared thereby

Abstract From the Canadian patent

Disclosed is an organic/inorganic composite porous separator comprising: (a) a polyolef in-based separator substrate; and (b) an active layer formed by coating at least one region selected from the group consisting of a surface of the substrate and a part of pores present in the substrate with a mixture of inorganic particles and a binder polymer wherein the inorganic particles in , the active layer are interconnected among themselves and are fixed by the binder polymer, and interstitial volumes among the inorganic particles form a pore structure. A method for manufacturing the same separator and an electrochemical device including the same separator are also disclosed. An …