The effect of Ni doped ZnO in carbon substrate of platinum electrodeposited electrode for methanol oxidation reaction in low temperature methanol fuel cell system

nowadays, methanol fuel cell systems has been attracted research activities to investigate for facilitating methanol oxidation reaction. One of activities is concentrated on improving electrocatalysts. ZnO and its derivatives can be used as additive in electrode substrate. In this work, a simple low temperature hydrothermal method has been used for synthesis of different morphologies of ZnOand 1-20% molNi doped ZnOnanostructures.After preparation additive it was inserted electrode substrate as paste. Then platinum was electrodeposited by cyclic voltammetry on substrate of electrode. Prepared electrodes was investigated for methanol oxidation reaction in three electrode half-cell system.The electrochemical methods like as linear sweep voltammetry was used for studying of the content of Ni/ZnO in substrate of electrode effect on methanol oxidation reaction. According our results, by increasing the Ni concentration in electrode, the current density is increased. Studies of cyclic voltammetry using providedmodified electrodes showed a significant reduction in anodic over voltage compared to bare electrodewas observed. Best response was obtained in terms of the current enhancement, overvoltage reduction, and reversibility improvement of the methanol oxidationreaction under experimental conditions by modified electrode with 20% Ni doped ZnOnanoparticles.