논문 상세보기
Perfluorinated sulfonic acid (PFSA) ionomers have been widely used as representative polymer electrolyte membrane (PEM) materials for fuel cells and water/salined water electrolysis. The PFSA membranes need to satisfy selective transport behaviors to small molecules including gases and ionic species; the PFSA membranes have to transport protons as fast as possible, while they should act as hydrogen barriers, since the permeated gas induces the thermal degradation of cathode catalyst, resulting in rapid electrochemical reduction. In this study, hydrogen permeation properties of PFSA membranes are evaluated using a handmade measurement system, which is designed for measuring gas transport properties through PEM materials or membrane-electrode assembly under actual fuel cell operation conditions.
