Investigation of methanol electrooxidation at Ir-modified C/Ni electrode in alkaline solution

Abstract

This study presents electrochemical preparation of Ir loaded Ni-modified C felt electrode (C/Ni-Ir) and its characterization with the help of cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), chronoamperometry (CA), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) techniques. The experimental results show that, the modification of C felt by Ni increases the rate of methanol electrooxidation reaction. Moreover, the catalytic efficiency more and more enhances when a low amount of Ir is loaded over the surface. The Ir-modified catalyst has good time stability.