- Separator for electrochemical device comprising core-shell fillers electrochemical device comprising the same and method for preparing the separator

摘要

The present invention relates to a separator for an electrochemical device including core-shell particles, an electrochemical device including the same, and a process for producing the separator. According to an aspect of the invention, the inorganic particle core (core), and is covered on the surface of the core, the melting point (T _m) is a number of cores comprising a shell (shell) of 170 ℃ than polymer-shell structure And a porous particle layer in which the particles are bonded to each other by fusion between the shells. The separator according to one aspect of the present invention exhibits a shutdown function by the shell structure when the combination with the porous particle layer separator or the porous substrate thereof is out of the normal operating temperature range of the cell, Safety can be maintained.