SYNTHESIS AND CHARACTERIZATION OF NI.CO(OH)2 MATERIAL FOR SUPERCAPACITOR APPLICATION

Abstract: Nanosized ß-Ni(OH)2 is being widely used as an electrode material for supercapacitor because of its high power density, high specific energy and low toxicity. But with addition of dope material like Co, Al specific capacitance of Ni(OH)2 significantly increased. Ni(OH)2, Co(OH)2 and Ni.Co(OH)2 was successfully synthesized by conventional precipitation method. Developed materials were characterized by using X-ray Diffraction (XRD), Scanning electron microscope (SEM), Atomic Force Microscopy (AFM), Fourier Tranform Infrared Spectroscopy (FTIR). XRD result confirmed the substitution of cobalt in nickel hydroxide. Electrochemical studies were carried out by using cyclic voltammetric (CV). Specific capacitance obtained from Ni.Co(OH)2 significantly higher than Ni(OH)2 and Co(OH)2 and was found to be 708 F/g at scan rate 1 mV/s.

Keywords: Supercapaciror; Electrochemical; pseudocapacitor; nanocomposites.