Microwave Assisted Synthesis of Osmium Electrocatalysts for the Oxygen Reduction Reaction in the Absence and Presence of Aqueous Methanol

Figure 6

Experimental (at 0.5 V/NHE) and theoretical (2 and 4 electrons) Koutecky-Levich plots in the absence and presence of 2 mol L⁻¹ methanol of the osmium catalysts synthesized at (a) 180°C/30 min/80 watts; (b) 180°C/30 min/100 watts; (c) 180°C/60 min/100 watts; (d) 30% Pt/Vulcan XC-72.

(a)

(b)

(c)

(d)