SYNTHESIS OF COBALT FERRITE NANOPARTICLES BY HYDROTHERMAL METHOD FOR SUPERCAPACITORS APPLICATION

Abstract

Spinel cobalt ferrites CoFe2O4 nanoparticles (NPs) have been synthesized by hydrothermal method, with optimized growing conditions. The structural and morphological characterizations of the as-prepared material were investigated using X-ray diffraction (XRD), and field high resolution transmission electron microscopy (HRTEM). The obtained CoFe2O4 NPs are of single phase cubic spinel structure with nanoplatelet shape and an average particle size of 17 nm. The electrochemical performances were measured using three electrode configuration by cyclic voltammetry (CV) measures in 6M KOH electrolyte. CV tests have been performed for three different loading masses of the obtained CoFe2O4 as active material on a Ni foam current collector. These ferrites nanoparticles show high values of specific capacitance, the best result being obtained for the lowest loading mass, with 315 F/g