Influence of Mn incorporation on the supercapacitive properties of hybrid CuO/Cu(OH)2 electrodes

Abstract

Here, we are presenting the effect of Mn doping on the supercapacitive properties of CuO/Cu(OH)₂ hybrid electrodes. Briefly, Mn doped CuO/Cu(OH)₂ (Mn:CuO/Cu(OH)₂) thin films have been synthesized by a successive ionic layer adsorption and reaction (SILAR) method which are further characterized by different physiochemical techniques. Our results revealed the formation of hybrid CuO/Cu(OH)₂ thin films with significant morphological deviation through Mn doping. Moreover, considerable positive effect of Mn doping on the electrochemical properties of hybrid CuO/Cu(OH)₂ electrodes have been witnessed. Later, the results suggest that at 3% Mn doping in CuO/Cu(OH)₂ electrodes with nanoflower-like nanostructures exhibits the highest specific capacitance. The maximum specific capacitance achieved for a 3% Mn:CuO/Cu(OH)₂ hybrid electrode is 600 F g⁻¹ at 5 mV s⁻¹ in 1 M Na₂SO₄ electrolyte. Additionally, a Ragone plot confirms the potential of the Mn:CuO/Cu(OH)₂ hybrid electrode for electrical energy storage applications.