Two-dimensional (2-D) structure and high conductivity of the metal disulphides (MDs) are interesting for the applications in the energy storage sector. Nevertheless, their high instability restricts their widespread applications. BMDs composited with graphene are promising route to design an electrode capable of giving high energy/power density. However, one of the major challenges is to ensure the uniform deposition of BMDs on the surface of graphene. Also, it is vital to control the crystallinity of the BMDs/graphene composite to obtain the desired performance.

In this work, we report MoS₂/VS₂ nano-urchins homogeneously grown onto reduced graphene oxide (rGO) matrix (denoted as G-MVS) via a facile hydrothermal approach and its electrochemical performance in an aqueous electrolyte system. G-MVS has a high specific capacitance of 460 F g^-1 (287.5 F cm^-2) at 0.5 A g^-1 and 310 F g^-1 (193.75 F cm^-2) at 10 A g^-1. In a symmetric configuration G-MVS//G-MVS, a high energy density of 49 Wh kg^-1 (67.86 mWh cm^-2) at a power density of 700.25 W kg^-1 was achieved.