Carbon/CoFe2O4 composite nanoparticle for energy storage

supercapacitors with excellent cycle life, rapid charging and discharging, wide thermal operating potential range, low cost, eco-friendly and safety able to storage electrochemical energy like batteries and fuel cells [1]. According to the characteristics of supercapacitors, they can be used in different applications requiring high power density such as consumer electronics, memory back-up systems and smart grids [2]. In this work, we report the studies concerning the structure and electrochemical properties of carbon/CoFe2O4 composite nanoparticle produced by co-precipitation. The prepared samples were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM). The electrochemical performance of the material is investigated by cyclic voltammetry (CV), galvanostatic charge/discharge cycling and electrochemical impedance spectroscopy (EIS). The results indicate that carbon/CoFe2O4 composite nanoparticle a good supercapacitive behavior.