Silvi Rahmawati Wibowo, Viona Lidya Haryati Putri, Nandang Mufti, Aripriharta, Markus Diantoro, Eprilia Trikusuma Sari
Asymmetric super capacitors have been fabricated using nanostructured AC//AC-NiCo2O4 composite electrodes. The aim was to determine the performance of a modified electrode based on AC as the anode and AC-NiCo2O4 as the cathode. NiCo2O4 has been successfully synthesized using the co-precipitation method. FTIR, XRD, and SEM characterized the material. The NiCo2O4 confirmed the crystalline structure assigned to cubic spinel with nano spheres morphologies. The electrochemical properties of the prepared composite electrodes and fabricated super capacitor cell shave been studied using charge-discharge (CD) and cyclic voltammetry (CV) in 1M Et4NBF4 as an electrolyte. The optimized composition is AC-NiCo2O4 (15%), exhibiting a superior power densityof 42.56 W kg-1. These results showed that AC-NiCo2O4 material could be a great candidate as an active material for super capacitors. © 2024 Trans Tech Publications Ltd, All Rights Reserved.
Department of Physics, Faculty of Mathematics and Natural Science, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia; Centre of Advanced Materials for Renewable Energy, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia; Electrical Engineering Department, Engineering Faculty, State University of Malang, 5 Semarang Str East Java, Malang, 65145, Indonesia