Caffeine-assisted facile synthesis of platinum@palladium core-shell nanoparticles supported on reduced graphene oxide with enhanced electrocatalytic activity for methanol oxidation

A facile, rapid, and wet-chemical co-reduction method is developed for synthesis of Pt@Pd/RGO with the help of caffeine, without any seed or template. The as-prepared nanocomposite exhibits the enhanced electrocatalytic activity and improved stability for MOR, compared with Pt/RGO, Pd/RGO, commercial Pt black and Pd black.