Hydrothermal Synthesis of ß -Ni(OH)2 And Its Supercapacitor Properties

In present manuscript, we synthesized the Nickel hydroxide as an electrode material or supercapacitor application, using hydrothermal method with nickel nitrate as nickel source and hexamethylenetetramine as a directing agent. The reaction was carried out at 160 degrees C temperature for 18 hrs. The stnictural, morphological and electrochemical characterizations were studied by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Cyclic Voltammetry (CV) and Galvanostatic Charge Discharge (GCD) respectively. Phase purity and crystalline nature of as prepared nickel hydroxide beta-Ni(OH)(2) was reveled from X- ray study. Using Debye Scherer's formula crystallite size of similar to 1.5 nm was estimated for Nickel hydroxide. SEM reveals beta-platelets like morphology of Ni(OH)(2) average of platelets length of the order of mu m. Electrochemical studies (CV and GCD) were carried out in 2M KOH electrolyte solution. The maximum capacitance of 225 Fg(-1) was observed for scan rate 5 mV within the potential window of 0.1 to 0.4 V.