▎ 摘　　要

A facile electrochemical approach to synthesize reduced graphene oxide (RGO) modified glassy carbon (GC) electrode as an excellent support for anchoring PtCuAu nanoparticles is reported. The as-prepared PtCuAu/RGO catalyst has been characterized by scanning electron microscopy (SEM), energy dispersive Xray spectroscopy (EDX) and electrochemical methods. It is found that the PtCuAu nanoparticles formed alloy structures and are evenly distributed on the RGO substrate. Compared with Pt/RGO, PtCu/RGO, PtAu/RGO and CuAu/RGO electrodes, the PtCuAu/RGO catalyst exhibits distinctly enhanced current density and nice stability toward formic acid electrooxidation. The experimental results indicate that the prepared PtCuAu/RGO catalyst has enormous potential applications in direct formic acid fuel cells (DFAFC). (C) 2014 Elsevier B.V. All rights reserved.