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PREPARATION OF NICKEL - COBALT SPINEL OXIDES NixCO3-xO4. COMPARISON OF TWO PHYSICAL PROPERTIES STEMMING FROM FOUR DIFFERENT PREPARATION METHODS AND USING CARBON PASTE ELECTRODE

A comparative study of two electro-physical properties (porosity and electrical conductivity) of binary nickel cobalt oxides electrodes with spinels mixed oxides NixCo3-xO4 as active matter, was carried out. Four different routes were used to prepare spinel-type NixCo3-xO4 (0  x  2.5) compounds in order to link these properties with the preparation method. The substitution of Ni for Co increases the conductivity and the porosity of the electrode till a certain ratio of nickel. X-ray diffraction patterns showed that the oxides crystallize in a cubic spinel phase. Electrical conductivity as well as porosity depends on the preparation route.


Auteur(s) : Makhtar Guene1*, Abdou Aziz Diagne1, Modou Fall1, Mor Marème Dieng1 and Gérard Poillerat2
Pages : 255-262.
Année de publication : 2007
Revue : Bulletin ofChemical Society of Ethiopia
N° de volume : 21(2)
Type : Article
Mise en ligne par : GUENE Makhtar