Synthesis and electrochemical investigation of spinel cobalt ferrite magnetic nanoparticles for supercapacitor application

• DOI: 10.1007/s10008-017-3813-y
• Publication Date: 2017-11-04T13:34:27Z
• Authors: H. Kennaz; A. Harat; O. Guellati; D. Y. Momodu; F. Barzegar; J. K. Dangbegnon; N. Manyala; M. Guerioune
• Keywords: 02 engineering and technology; 0210 nano-technology

Cobalt ferrite magnetic nanoparticles (CoFe2O4-MNPs) were synthesized by hydrothermal and co-precipitation methods using different precursors such as nitrates, chlorides, and acetates, at different concentrations with/without surfactant under different growth conditions. The structural and morphological analyses reveal the formation of a single-phase CoFe2O4 in nanoplatelet-shaped NPs with average particle size between 11 and 26 nm depending on synthesis condition. The specific surface area of these NPs obtained by hydrothermal method was ~ 34 m2 g−1. Electrochemical performances of the obtained nanoparticles in a three-electrode configuration with a 6 M KOH electrolyte revealed a specific capacitance (C s) of 429 F/g at 0.5 A/g, with excellent capacitance retention of 98.8% after 6000 cycles at 10 A/g for the electro-active NPs synthesized by hydrothermal method at 200 °C for 18 h.