Sonochemical synthesis of a 2D–2D MoSe2/graphene nanohybrid electrode material for asymmetric supercapacitors

A sonochemical route is used to prepare a few layers of MoSe₂ and its 2D–2D nanohybrid is prepared with graphene by a solvothermal process. This nanohybrid exhibits a high specific capacitance of 945 F g⁻¹. An ASC device MoSe₂/G‖AC is fabricated, which delivers an energy density of 26.6 W h kg⁻¹ and a power density of 0.8 kW kg⁻¹.