Facile synthesis and high electrochemical performance of porous carbon composites for supercapacitors

Abstract

A facile and green method was used to synthesize Fe₂O₃/mushroom derived porous carbon (Fe₂O₃/MPC) nanocomposites with high capacitive properties. The resultant materials were analyzed by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), powder X-ray diffraction (XRD), and Brunauer–Emmett–Teller (BET) measurements. It is shown by the BET surface area measurements that MPC has a high specific surface area and abundant porosity, which are conducive to improve the electrochemical performance. The Fe₂O₃/MPC nanocomposite exhibits a maximum specific capacitance of 367.39 F g⁻¹ at a current density of 0.5 A g⁻¹ and good capacitance stability over 1500 cycles at a current density of 5 A g⁻¹. These attractive results indicate that the Fe₂O₃/MPC nanocomposite could be a potential electrode material for supercapacitors.