A novel porous mo₃n₂/moo₃ hybrid nanobelt as supercapacitor electrode material

Mo₃N₂/MoO₃ hybrid composites with a porous nanobelt structure are prepared by a generally applicable strategy. Benefiting from the unique porous nanobelt architecture and the synergistic contributions of the components, Mo₃N₂ /MoO₃ hybrid exhibits excellent performance as a supercapacitors. Herein, Mo₃N₂ /MoO₃ hybrid is explored as a potential capacitive material for the first time. This composite shows a significantly larger specific capacitance (282 F g⁻¹ at the current density of 1 A g⁻¹ ) than a single component with outstanding cyclic stability (with 93% retention of the original specific capacitance even after 1000 CV cycles). An asymmetric supercapacitor device is also fabricated with a maximum energy density of 17.4 Wh kg⁻¹ at 697 W kg⁻¹.