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Electrochemical Characterization of Ni0.4Co2.6O4 Spinel Mixed Oxides Powder Prepared by a Sol Gel Process. Study of their Surface Properties by X-ray, FTIR, UV-VIS-NIR Spectroscopy and Scanning Electronic Microscopy (SEM)

Electrochemical studies were carried out on Ni0.4Co2.6O4 powders prepared by sol-gel via propionic acid method using cyclic and steady state voltammetries. The oxide surface was characterized by scanning electron microscopy (SEM), X-ray diffraction, UV-vis-NIR and FTIR spectroscopies. The results showed that the formation of homogeneous oxide with a single spinel phase occurred at 350°C. The surface redox couple NiOOH/Ni(OH)2 is confined on the surface material l.

Auteur(s) : Makhtar GUENE , Abdou Aziz DIAGNE, Modou FALL, Mor Marème DIENG, Gérard Poillerat
Pages : 213-220
Année de publication : 2005
Revue : Bulletin ofChemical Society of Ethiopia
N° de volume : 19(2)
Type : Article
Mise en ligne par : GUENE Makhtar