SYNTHESIS AND CHARACTERIZATION OF Ni0.4Co2.6O4 SPINEL MIXED OXIDES POWDER: STUDY OF ITS SURFACE PROPERTIES BY VOLTAMMETRY, X-RAY, FTIR, UV-VIS-NIR SPECTROSCOPY AND SCANNING ELECTRON MICROSCOPY

Makhtar Guene*, Abdou Aziz Diagne, Modou Fall, Mor Marème Dieng, Gérard Poillerat
2005 Bulletin of the Chemical Society of Ethiopia  
Electrochemical studies were carried out on Ni 0.4 Co 2.6 O 4 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.
doi:10.4314/bcse.v19i2.21126 fatcat:w6du62xr6jdizmvv3jfkx4lini