Nanostructured MoS₂/BiVO₄ Composites for Energy Storage Applications.

ABSTRACT: We report the optimized synthesis and electrochemical characterization of a composite of few-layered nanostructured MoS₂ along with an electroactive metal oxide BiVO₄. In comparison to pristine BiVO₄, and a composite of graphene/BiVO₄, the MoS₂/BiVO₄ nanocomposite provides impressive values of charge storage with longer discharge times and improved cycling stability. Specific capacitance values of 610?Fg^-1 (170?mAhg^-1) at 1?Ag^-1 and 166?Fg^-1 (46?mAhg^-1) at 10?Ag^-1 were obtained for just 2.5 wt% MoS₂ loaded BiVO₄. The results suggest that the explicitly synthesized small lateral-dimensioned MoS₂ particles provide a notable capacitive component that helps augment the specific capacitance. We discuss the optimized synthesis of monoclinic BiVO₄, and few-layered nanostructured MoS₂. We report the discharge capacities and cycling performance of the MoS₂/BiVO₄ nanocomposite using an aqueous electrolyte. The data obtained shows the MoS₂/BiVO₄ nanocomposite to be a promising candidate for supercapacitor energy storage applications.

SUBMITTER: Arora Y 

PROVIDER: S-EPMC5093765 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature