Authors: Julie Anne D. del Rosario, Joey D. Ocon, Hongrae Jeon, Jaeyoung Lee, Julie Anne D. del Rosario, and Joey D. Ocon
Direct ethanol fuel cell (DEFC) has been widely studied because of its potential to be a high-energy density and low-toxicity power source of the future. Suitable catalysts for the anode reaction are necessary to fully utilize the advantages of DEFCs. Consequently, we fabricated bilayer models of palladium-nickel catalysts using sputtering deposition technique. We then investigated the activity of the catalysts towards oxidation of ethanol in alkaline media. Results suggest that palladium is the active component of the bilayer catalysts whereas nickel alone has negligible activity towards ethanol oxidation. Interestingly, Ni-modified palladium surface gives higher activity than Pd and Pd-modified nickel surface. This investigation is expected to be of great importance in the development of suitable EOR catalysts for direct ethanol fuel cells.
Keywords: bilayer, ethanol oxidation, sputtering deposition