Temperature dependence of cationic and anionic precursor on morphological improvement of CuO electrodes and its consequent effect on electrochemical supercapacitive properties

The hierarchical structures of hybrid nanostructures like CuO electrodes were investigable made-up on stainless steel via surfactant-free and inexpensive successive ionic layer adsorption and reaction (SILAR) method. Further, these CuO electrodes exhibits outstanding surface properties like uniform growth on surface, high surface area and uniform pore size distribution of CuO samples. The electrochemical properties of CuO nanostructures have been investigated by cyclic voltammetry, charge discharge and electrochemical impedance spectroscopy techniques. The electrochemical studies of the CuO samples show evident influence of surface properties on the pseudo capacitance performance. The maximum specific capacitances of nanopartical/nanoplates like CuO nanosheets are found to be 790 Fg⁻¹ at 5 mV s⁻¹ scan rate. Present investigation suggests the inexpensive SILAR move toward for fine modification surface properties of copper oxide materials for energy storage applications.