Nanostructured MoS2/BiVO4 Composites for Energy Storage Applications

Yukti Arora; Amit P Shah; Shateesh Battu; Carina B Maliakkal; Santosh Haram; Arnab Bhattacharya; Deepa Khushalani

doi:10.1038/srep36294

Nanostructured MoS₂/BiVO₄ Composites for Energy Storage Applications

Sci Rep. 2016 Nov 3:6:36294. doi: 10.1038/srep36294.

Authors

Yukti Arora¹, Amit P Shah², Shateesh Battu³, Carina B Maliakkal², Santosh Haram³, Arnab Bhattacharya², Deepa Khushalani¹

Affiliations

¹ Department of Chemical Sciences, Tata Institute of Fundamental Research, Mumbai-400005, India.
² Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Mumbai-400005, India.
³ Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune-411007, India.

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.

Publication types

Research Support, Non-U.S. Gov't