The perfect matching between the low-cost Fe₂O₃ nanowire anode and the NiO nanoflake cathode significantly enhances the energy density of asymmetric supercapacitors

Abstract

A novel low-cost anode of homogenous Fe₂O₃ nanowires on CFP was developed, achieving a high specific capacitance in 0 to −1.35 V. Matching it with the NiO nanoflake cathode, an extremely high energy density of 105 W h kg⁻¹ is obtained at 1400 W kg⁻¹.