Ni₂P/ ppy/rGO复合材料的制备及析氧性能

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中图分类号：TQ116.2 文献标志码：A DOI：10.3969/j.issn.1003-9015.2025.01.017

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 （NiP） to prepare a N 2 P/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 N -2 P/ppy/rGO has good electrocatalytic performance.When the current density is 10mA⋅cm-2 ，the required overpotential（258 mV）is smaller，which shows better electrocatalytic oxygen evolution performance than ppy/rGO（ 319mV ）and Ni2P/ppy（323 mV）. The corresponding Tafel slope （74.0mV⋅dec-1 ）of the Ni，P/ppy/rGO catalyst is also small，which indicates that the Ni 2 P/ppy/rGO catalysthas good catalytic kinetic performance in oxygen evolution reaction.

Key words： graphene; polypyrrole； nickel phosphide； oxygen evolution reaction；impedance

1前言

随着国家经济的繁荣发展与科技水平的不断提高，不可再生能源消耗越来越大，面临枯竭，当务之急是发展绿色、可再生的能量转换和储存技术[1-2]。（剩余13518字）