METHOD FOR PREPARING ELECTRODE ASSEMBLY, ELECTRODE ASSEMBLY THEREFROM, AND SECONDARY BATTERY COMPRISING THE SAME

摘要

The present invention relates to a method for preparing an electrode assembly, the electrode assembly thereof, and a secondary battery including the same. According to an aspect of the present invention, provided is a method for preparing an electrode assembly including a step for forming a first electrode having a first electrode active material; a step for forming a second electrode having a second electrode active material; a step for forming a porous separation membrane that has a first electrode active material layer on one surface and a second electrode active material layer on the other surface; and a step for forming an electrode assembly by interposing and rolling the porous separation membrane between the first electrode and the second electrode so that the same electrode active materials face each other. According to the method of the present invention, an electrode assembly that has a significantly improved battery output performance, maintains a coupling force both of the electrodes and the separation membrane therebetween, and provides process convenience, and a secondary battery including same can be obtained.