Enhancement Of Specific Capacitance Using Hematite Nanoparticles Produced By Green Synthesis

Résumé: Current research on iron oxide nanoparticles (Fe2O3-NPs) is extremely prolific because of their unique magnetic and electrical properties with a great application potential like in energy storage. The present paper describes green synthesis technique for the production of Fe2O3 NPs using aqueous olive leaf extract (OLE) as surfactant agent. Various characterization techniques were performed on those mesoporous Fe2O3 NPs such as Raman spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy (XPS) and X-ray diffraction. The results demonstrate the spindle like shaped of Fe2O3 NPs with average particle size around 50-70 nm. The electrochemical performances of pristine activated carbon AC and the AC/Fe2O3 nanocomposite were compared in order to distinguish the added value of synthesized nanoparticles in energy storage. In comparison with pure AC electrode, AC/Fe2O3 nanocomposite electrodes exhibits an enhanced specific capacitance with values up to 87 F/ g.

Publié dans la revue: Journal of New Technology and Materials