Abstract: Provided is a separator processing device for an electrochemical apparatus, the separator processing device including a vacuum chamber, a susceptor provided in the vacuum chamber and configured to allow a separator to be seated thereon, and a sputtering target provided on the vacuum chamber and including target elements and luminescent elements that are to be deposited on the separator, thereby obtaining an advantageous effect of accurately detecting the lifespan of the sputtering target and the timing of replacement of the sputtering target.

Abstract: The present disclosure relates to a method for preparing a porous transport layer and the porous transport layer prepared therefrom. The method includes forming a base layer by an application process using a slurry for the base layer containing particles of a titanium family element, forming a first coating layer and a second coating layer independently by application processes using a slurry for the first coating layer containing particles of a first noble metal and a slurry for the second coating layer containing particles of a second noble metal, respectively, and disposing the first coating layer and the second coating layer on both surfaces of the base layer, respectively, and the slurry for the first coating layer further contains the particles of the titanium family element.