Tailoring synthesis parameters of NiCo 2 O 4 nanorods for enhanced supercapacitive performance

Supercapacitors have become a viable and environmentally friendly option for energy storage. Over the years, transition metal oxides have been used in supercapacitor applications because of their superior electronic conductivity and robust redox reactions. In this paper, we study the morphological, structural, and supercapacitance characteristics of NiCo2O4 nanorods at diverse synthesis temperatures and times. Utilizing XRD and FE-SEM, the crystalline structure and morphology were investigated. The Raman spectroscopy was used to determine the defects in nanostructures. The electrochemical techniques were used to examine the supercapacitance performance. Within a 0.8 V potential frame, the NiCo-160/24 had a significant specific capacitance of 118.46 Fg−1 at 0.14 Ag−1 in 1 M KOH showing an increment of ∼50% in specific capacitance as compared to NiCo-125/12. The promising supercapacitive performance of NiCo-160/24 paves its way to be utilized as electrode material in supercapacitor industry.