Highly Stable and Active Pt/Nb-TiO₂ Carbon-Free Electrocatalyst for Proton Exchange Membrane Fuel Cells

Figure 6

Cyclic voltammograms recorded on (a) PtNP/Nb-TiO₂ and (b) ETEK PtNP/C electrodes in 0.1 M HClO₄ solution at room temperature during ADT. (c) ECSAs as a function of cycling numbers on PtNP/Nb-TiO₂ and ETEK PtNP/C electrodes.

(a)

(b)

(c)