SEPARATOR FOR ELECTROCHEMICAL DEVICE AND PREPARATION METHOD THEREOF

摘要

The present invention relates to a separator for an electrochemical device, and a preparation method thereof, and more specifically, to a separator for a thin film electrochemical device having improved thermal stability and capable of high density charging for high capacity by directly introducing a coating layer comprising an inorganic oxide thin film on a porous polymer substrate, and a preparation method of the separator using a film vapor deposition method.