Electrochemical Performance of Activated Carbon-NiCo<sub>2</sub>O<sub>4</sub> as Candidate for Supercapacitor Electrode Materials

Asymmetric supercapacitors have been fabricated using nanostructured AC// AC-NiCo 2 O 4 composite electrodes. The aim was to determine the performance of a modified electrode based on AC as the anode and AC-NiCo 2 O 4 as the cathode. NiCo 2 O 4 has been successfully synthesized using the co-precipitation method. FTIR, XRD, and SEM characterized the material. The NiCo 2 O 4 confirmed the crystalline structure assigned to cubic spinel with nanospheres morphologies. The electrochemical properties of the prepared composite electrodes and fabricated supercapacitor cells have been studied using charge-discharge (CD) and cyclic voltammetry (CV) in 1M Et 4 NBF 4 as an electrolyte . The optimized composition is AC-NiCo 2 O 4 (15%), exhibiting a superior power density of 42.56 W kg -1 . These results showed that AC-NiCo 2 O 4 material could be a great candidate as an active material for supercapacitors.