Accurate Assessment of the Oxygen Reduction Electrocatalytic Activity of Mn/Polypyrrole Nanocomposites Based on Rotating Disk Electrode Measurements, Complemented with Multitechnique Structural Characterizations

Figure 2

RDE voltammograms (scan rate: 5 mV s⁻¹) in O₂-saturated 0.1 M KOH evidencing the effect of the following: poly-Pt electrode before polarization (blue curves) and quality of the RDE sliding electric contacts (red curves) (a) and parameter of the cell design for Mn-PPy240/G (b). The N₂ background has not been subtracted.

(a)

(b)