Fundamental Mechanistic Understanding of Electrocatalysis of Oxygen Reduction on Pt and Non-Pt Surfaces: Acid versus Alkaline Media
Figure 6
(a) Square wave voltammetry (SWV) and (b) cyclic voltammetry (CV) of as-received iron(III) meso-tetraphenylporphyrin chloride (FeTPPCl/C) supported on Black Pearl carbon. Experiments were performed in argon-saturated 0.1 M NaOH and 0.1 M HClO4 electrolytes. SWV parameters: 5 mV step potential, 20 mV amplitude, and 10 Hz frequency. CV: 20 mV/s.
