Methanol adsorbates on the DMFC cathode and their effect on the cell performance

Understanding the dynamic behaviour of direct methanol fuel cells: Response to step changes in cell current

“…The latter one is a phenomenon observed generally for DMFCs [4,33]. Hence, the quantitative evaluation of the dynamic response itself is seen to be more reliable to interpret the state of the anode than evaluation of the steady-state behaviour.…”

Nanocomposite SPEEK-based membranes for Direct Methanol Fuel Cells at intermediate temperatures

“…Nevertheless, it is well known that methanol crossover through the membrane, commonly a sulfonated perfluorinated polymer so-called Nafion ® , causes the DMFC performance to decrease. Methanol adsorbates on the catalyst active sites for oxygen reduction at the cathode is the main reason for performance deterioration [4,5].…”

Enhanced Methanol Tolerance of Highly Pd rich Pd-Pt Cathode Electrocatalysts in Direct Methanol Fuel Cells

“…Methanol-impermeable PEMs can be introduced into the membrane electrode assembly (MEA) to reduce methanol crossover [22][23][24]. Cathode electrocatalysts must show selective oxygen reduction activity compared to methanol oxidation when Pt-based nanoparticles are used as DMFC cathode electrocatalysts [4,8,[25][26][27][28][29].…”