Abstract: In order to design and develop an economical and efficient catalyst for oxygen evolution reaction (OER), the reduced graphene oxide (rGO) was functionalized by polypyrrole (ppy) and combined with nickel phosphide (Ni₂P) to prepare a Ni₂P/ppy/rGO catalyst.X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) were used to characterize the structure and morphology of the catalyst.The results show that Ni₂P/ppy/rGO has good electrocatalytic performance.When the current density is 10 mA·cm^-2, the required overpotential (258mV) is smaller, which shows better electrocatalytic oxygen evolution performance than ppy/rGO (319mV) and Ni₂P/ppy (323mV).The corresponding Tafel slope (74.0mV·dec^-1) of the Ni₂P/ppy/rGO catalyst is also small, which indicates that the Ni₂P/ppy/rGO catalyst has good catalytic kinetic performance in oxygen evolution reaction.