The effect of methanol and ethanol cross-over on the performance of PtRu/C-based anode DAFCs

It was found that ethanol shows lower cross-over rates than methanol through the Nafion® membrane in spite of the higher membrane porosity resulted in presence of ethanol aqueous solutions. Furthermore, it was found that ethanol presents less negative effect on the cathode performance due to both its smaller permeability through Nafion® membrane and its slower electrochemical oxidation kinetics over Pt/C cathode.