▎ 摘　　要

Reduced graphene oxide/iron oxide (rGO/Fe3O4) nanocomposite was synthesized by facile one-pot process and its performance as electrocatalyst for oxygen reduction reaction (ORR) was investigated. The nanocomposite was physically and electrochemically characterized using Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), Brunauer-Emmett-Teller (BET) method, scanning electron microscopy (SEM), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). FT-IR, XRD, and SEM confirms the presence of rGO and Fe3O4 as whole. CV data shows increment in current responses nearly two and a half folds for rGO/Fe3O4/GCE. EIS analysis shows stable electron transfers with lower charge transfer resistance (R-ct) of modified electrode due to synergistic effect between rGO and Fe3O4. The performance of the electrocatalyst in ORR was compared with bare GCE and rGO/GCE where higher catalytic performance and better stability were obtained. The analysis results shows that the compound could be a promising material for fuel cells.