Insights into the electrode reaction process of nickel nanoparticles @reduced graphene oxide catalyst for ethanol oxidation in alkaline solution

摘要: Nickel nanoparticles uniformly anchored on reduced graphene oxide (Ni/RGO) nanosheets is successfully prepared by a facile wet-chemical method. It found that many small Ni with the particle size of 4–8 nm are RGO, showing uniform dispersion. The Ni/RGO nanocomposite-modified glassy carbon electrode (GCE) (i.e., Ni/RGO/GCE) investigated as an electrocatalyst for ethanol oxidation reaction. Especially, as-prepared Ni/RGO/GCE delivers excellent electrocatalytic performance in terms low peak potential value, reduction its overvoltage, and satisfactory current density. properties could be ascribed to synergistic effect spherical RGO nanosheets, which can lead high use ratio Ni. proposed anodic emerged negative-going sweep may attributed ethanol, results from concentration autocatalytic process at Ni/RGO/GCE.