Mass Spectrometry of Polymer Electrolyte Membrane Fuel Cells

Figure 2

Dependence of the probability of methanol-to-CO₂ conversion on the flow rate of fuel delivered to the fuel cell anode. Methanol concentration was 2 M, cell potential 350 mV. Inset: comparison of typical mass spectra of DMFC anode exhaust acquired at low and high fuel load for the same methanol-fueled cell.