Abstract
Pt–GO composites with high-number-density Pt nanoparticles dispersed uniformly on GO nanosheets were prepared using ethylene glycol as reducer at 180°C. The nanoparticles had an average size of 12nm with corners and edges on their surfaces. The composites had electrochemically active surface area of 31.7m2g−1 with a ratio (If/Ir=0.96) of the forward anodic peak current (If) to the reverse anodic peak current (Ir) in cyclic voltammetry curves, which is much higher than those of the reported Pt nanodendrites/reduced graphene oxide composites.
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