The investigation of electrochemical behavior of Carbon/Nickel Oxide as an Electrode in Supercapacitors

In this research، the electrochemical characteristics of electrodes consisting of activated carbon (AC) and NiO/AC composites were investigated. All experimental were done in a three- electrode system by means of cyclic voltammetry and galvanostatic charge/discharge in 1M KOH and specific capacity was calculated in the positive and negative potentials. The cyclic voltammetric of electrodes demonstrated that presence of NiO in NiO/AC composites increase the maximum applicablepotential from 0. 2V/SSCE in carbon active to 0. 5V/SSCE in composites. Also، it was not possible to use composites with high amount of carbon at low current density. The specific capacity of compositeswith 0. 426 weightratio of AC/Ni is the best one in comparison to other compositions.