530397.fig.0022a
(a)
530397.fig.0022b
(b)
Figure 22: (a) Polarization curves of PtML/AuNi0.5Fe/C and Pt/C in an oxygen-saturated 0.1 M HClO4; (b) polarization curves for PtML/AuNi0.5Fe/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].