Effect of Solvent Composition on Coating Stabilit\ of PEFC Catal\st Ink

Abstract

The PEFC catal\st la\er is generall\ prepared b\ coating the catal\st ink using a slot die, but it is known that streak\ defects occur with high-speed coating. In this stud\, coating e[periments using catal\st inks with different solvent compositions are conducted to elucidate the effect of the solvent composition on coating stabilit\. The results show the coating stabilit\ changed due to the difference in viscosit\ and surface tension when the ethanol/water ratio of the solvent was different.