مشخصات پژوهش

In this work enhanced electrocatalytic oxidation of methanol at reduced graphene oxide-nickel oxide nanocomposite modified carbon ceramic electrode (rGO-NiO/CCE) was studied by electrochemical techniques in alkaline medium. Due to some unique properties of carbon ceramic electrode (CCE) involving high porosity, renewable surface, good conductivity, and economy it was used as a substrate in this study (1). The composition of reduced graphene oxide with excellent conductivity and high surface to volume ratio, and NiO results a new nanocomposite with brilliant performance for electrocatalytic applications. The mechanism of electrocatalytic oxidation of methanol on rGO-NiO/CCE was investigated and proposed to be done by reaction with NiOOH and also direct electro-oxidation reaction. The effects of scan rate and methanol concentration on the anodic peak heights as well as current decay measurements were studied. Cyclic voltammetry studies demonstrated that the rGO-NiO/CCE exhibits much higher electrocatalytic activity and stability rather than CCE, rGO/CCE, NiO/CCE in methanol oxidation.