Sonochemically synthesized nanostructured ternary electrode material for coin-cell-type supercapacitor applications

Two-dimensional MoS2-based composite has remarkable potential as an electrode material for advanced energy storage. However, the application of MoS2 is limited by its low electrical conductivity and cyclic stability. Herein, a novel three/two-dimensional (3D/2D) ternary nanostructured consisting MoS2/g-C3N4/reduced graphene oxide (rGO), denoted MCNG, synthesized using in-situ sonochemical-assisted method. Owing to combined 3D/2D morphological features, large surface area, enriched interfacial conductivity, numerous surface-active edge sites, mesoporous structure, exhibits specific capacitance 663 F g−1 at current density 0.5 A outstanding stability with retention 91.7% after 10,000 charge–discharge cycles. coin-cell-type asymmetric supercapacitor composed MCNG positive activated carbon (AC) negative electrode, presents 11.43 Wh kg−1 power 4125 W kg−1. This synthesis scheme provides new pathway development multi-component sheet-like networks efficient materials their applications in storage devices.