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