In this work, nickel sulfide (Ni3S2) nanosheets were growth on the surface of graphitic-nanofibres (GNFs) by using pulse-reversal (PR) electrodeposition method. Compared to the pristine Ni3S2 electrode with discharged capacitance of 461 F g-1, the GNFs@ Ni3S2 electrode revealed a higher capacitance of 635 F g-1 at the same charge-discharge current density of 0.5 mA cm-2. The GNFs@ Ni3S2 electrode still retained 79% of the capacitance at 0.5 mA cm-2 when it was charged/discharged at 4 mAcm-2. Furthermore, the GNFs@ Ni3S2 electrode showed great electrochemical stability. For instance, the GNFs@ Ni3S2 electrode displayed 90% of initial capacitance after the consecutive 200 cycles charged/discharged at current density of 0.5 mAcm-2.