Platinum Monolayer Electrocatalysts for the Oxygen Reduction Reaction: Improvements Induced by Surface and Subsurface Modifications of Cores

Figure 22

(a) Polarization curves of Pt_ML/AuNi_0.5Fe/C and Pt/C in an oxygen-saturated 0.1 M HClO₄; (b) polarization curves for Pt_ML/AuNi_0.5Fe/C before and after 15000 cycles of sweeping potentials between 0.6 and 1.0 V at 50 mV/s. Conditions: scan rate, 10 mV/s; rotation speed, 1600 rpm [62].

(a)

(b)