Abstract

This work aims to study the electro-oxidation of methanol, in an alkaline solution at a nickelmodified carbon paste electrode Ni -CPE, by cyclic voltammetry, impedance measurements and chronoemperometry. X-ray carried out morphological characterizations by and Microscopy Electronic Transmission (MET). Ni has been found to have a better catalytic activity for methanol oxidation; they are simple, less expensive and stable.

Keywords: Methanol fuel cell; Electro catalysis; Modified electrodes; Nickel catalyst; Chronoamperometry ; Impedance spectroscopy

Abbreviations: MET: Microscopy Electronic Transmission; DMFC: Direct Methanol Fuel Cell; PEM: Proton Exchange Membrane; SCE: Calomel Electrode Saturated; Ni-CPE: Nickel-Modified Carbon Paste; CPE: Carbon Paste Electrode; ET: Electrode