Engineering aspects of the direct methanol fuel cell system

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

“…The Nafion ® -115 membrane was adequately pretreated according to the literature [9,10] in order to expel impurities. The membrane samples were boiled successively in 3% H 2 O 2 aqueous solution, deionized water, 0.5 mol/L H 2 SO 4 solution and then in deionized water again, for 1 h in each step and stored in a refrigerator kept at 2 • C-4 • C. In order to quantify the membrane porosity, Nafion ® -115 membrane samples were immersed in aqueous solutions with different alcohol concentrations and equilibrated for 36 h. After that, the membranes were removed from the solution and the excess liquid was wiped from the membrane surface by the use of a filter paper.…”

Pt-based anode catalysts for direct ethanol fuel cells

“…The membrane electrode assembles (MEAs) were fabricated according to the method described in previous works [19,20,22]. The anode contained the in-house carbon-supported Pt-based catalysts with a Pt loading of 1.33 mg/cm 2 (except the case when pure Pt/C was used as anode catalyst where the platinum loading was 2.0 mg/cm 2 ) and the cathode contained commercial Pt/C catalyst (20 wt.%) purchased from Johnson Matthey with a Pt loading of 1.0 mg/cm 2 , which was kept identical in all the MEAs.…”

The role of the WOxad-component to Pt and PtRu catalysts in the electrochemical CH3OH oxidation reaction

“…Direct methanol fuel cells (DMFCs) have received much attention due to their promising use as low temperature power sources [1,2]. A major challenge for the successful implementation of DMFCs is the improvement of the Pt based anode catalysts towards the CH 3 OH oxidation reaction.…”