Hybrid supercapacitors constructed from double shelled cobalt zinc sulfide/copper oxide nanoarrays and ferrous sulfide/graphene oxide nanostructures.
Evolution of renewable energies in the era of the modernized world has been strongly tied up to the incessant development of high performance energy storage systems benefiting from both high energy and power densities. In the present work, binder free positive electrodes are fabricated via a facile electrochemical deposition route in which copper oxide nanorods (CuO NRs) directly grown onto the copper foam (CF) are decorated with bimetallic cobalt zinc sulfide nanoarrays (Co Zn S NAs) The fabricated Co Zn S@CuO CFs represent promising specific capacity of 317.03 C.g 1 at 1.76 A.g 1, along with superior cyclic stability (113% retention after 4500 cycles) Negative electrodes were further prepared through a direct deposition of iron sulfide nanosheets (Fe S NSs) onto the graphene oxide (GO) showing remarkable the specific capacitance of 543.9 F.g 1 at 0.79 A.g 1. Receiving benefits from remarkable energy and power densities (25.71 Wh.kg 1 and 8.73 kW.kg 1) alongside the reasonable life stability, the fabricated asymmetric supercapacitor (ASC) devices are on merit for developing high performance energy storage systems.
Journal of colloid and interface science