Synthesis of mesh-like Fe2O3/C nanocomposite via greener route for high performance supercapacitors

Abstract

A facile and template free greener route is used to fabricate natural polysaccharide based biocompatible mesh-like Fe₂O₃/C nanocomposites for supercapacitor application. Thermal, structural and morphological properties of iron oxide–carbon composites prepared at different annealing temperature have been analyzed and the electrochemical properties of composites are evaluated. The nanocomposite prepared at 500 °C with mesh-like structure reveals maximum specific capacitance of 315 F g⁻¹ in 2 M KOH solution at a scan rate of 2 mV s⁻¹ and good capacity retention (88.9%) after 1500 continues charge–discharge cycles with energy density of 37 W h kg⁻¹, indicating that the Fe₂O₃/C composite can be a promising electroactive material for a supercapacitor.