Resumo

DEHBI, Sanae; MASSAI, Harouna  e  CHTAINI, Abdelilah. Phosphate Modified Copper Electrodes for Methanol Fuel Cell. Port. Electrochim. Acta [online]. 2010, vol.28, n.4, pp.241-252. ISSN 0872-1904.

This work aims to investigate the electro oxidation of methanol, in alkaline solution at a copper electrode modified with electrodeposited natural phosphate and nickel (Ni-NP/Cu), by cyclic voltammetry, impedance measurements and square wave voltammetry. Morphological characterizations were performed by SEM and XRD techniques. It was found that Ni dispersed on natural phosphate (NP) shows a catalytic activity towards methanol oxidation better than massive Ni. Ni and NP were fixed on copper electrode by electro deposition using potentiostatic and galvanostatic techniques.

Palavras-chave : methanol fuel cell; electro catalysis; modified electrodes; nickel catalyst; square wave voltammetry.

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