“…Furthermore, the effect of carbon content is nearly saturated when one moves from C/Ti at = 1.5 to C/Ti at = 3. The latter finding is likely due to an increase in electrode coating thickness (and thus in methanol mass mass transfer control of the peak current at film electrodes and, thus, its square root dependence on scan rate [47][48][49]) and concentration differences (accepting a 0.5 reaction order throughout the potential range studied [50]), the maximum current density of 19 mA mgPt −1 is within the wide 1-100 mA mgPt −1 range reported for TiO2-supported Pt electrodes [8,[10][11][12]32,[51][52][53][54][55] (with most of these electrodes not exceeding 50 mA mgPt −1 [8,10,12,32,[51][52][53]55]). Figure 4C presents the voltammetric data of the same LSV experiments with those of Figure 4A,B but with the current normalized per Pt EASA, as determined by CO electrodesorption experiments and/or (when clear voltammetry could be obtained, e.g., at Pt/C and (Pt-Ru)/C electrodes) by H desorption experiments (not shown here).…”