The hierarchical interpenetrating reduced holey graphene oxide (rHGO)-decorated NiCo2O4 nanowires were constructed on carbon fibers (rHGO/NiCo2O4@CF) by a hydrothermal synthesis. Benefiting from the abundant nanopores and good conductivity of rHGO, the rHGO/NiCo2O4@CF delivered excellent specific capacitance of 1178 F g(-1) at 1 A g(-1) as supercapacitor electrode and outstanding rate capability of 93.4% capacitance retention even at 10 A g(-1). Furthermore, an asymmetric supercapacitor by using rHGO/NiCo2O4@CF as the positive electrode and activated carbon as the negative electrode has been assembled, which exhibited a high energy density of 74.88 Wh kg(-1) with a power density of 799.9 W kg(-1) and good cycle stability (82.7% capacitance retention after 5000 cycles). These exciting results are attributed to the hierarchical porous interpenetrating network architecture and the synergistic effect between rHGO and NiCo2O4 nanowires.