Vanadium telluride nanoparticles on MWCNTs prepared by successive ionic layer adsorption and reaction for solid-state supercapacitor

Anchoring of vanadium telluride (VxTey) nanoparticles onto the exterior layer of multi-walled carbon nanotubes (MWCNTs) has been successfully employed at room temperature (300 K) as first report by using successive ionic layer adsorption and reaction (SILAR) to yield VxTey/MWCNTs surface architecture. Mutualistic contribution from ion insertion/extraction introduced non-stoichiometric vanadium telluride with electric double-layer involved MWCNTs have been unified to enrich excellent electrochemical performance. Three-electrode system configured VxTey/MWCNTs electrode yields 16-fold enhancement in specific capacitance compared to the bare MWCNTs electrode. Achieved performance forced us to construct flexible solid-state supercapacitor device (FSS-SC). Symmetric electrode embedded with PVA-LiClO4 gel mediator harvests remarkable 2 V voltage window to gain 34.5 Wh/kg energy density and 0.7 kW/kg power density. Cycling over 10000 replications confirms the pronounced (82.5 %) stability of designed device and growing LED enables practical evidence; demonstrating its capacity as efficient energy storage device. Correlated density functional theory (DFT) has been manifested to confirm synergistic interactions between the VxTey and MWCNTs, and a corresponding enhancement in the electron density at the Fermi level of VxTey/MWCNTs describes the insight origin for enhanced supercapacitance.

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Work Title Vanadium telluride nanoparticles on MWCNTs prepared by successive ionic layer adsorption and reaction for solid-state supercapacitor
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Open Access
Creators
  1. Bidhan Pandit
  2. Sachin R. Rondiya
  3. Russell W. Cross
  4. Nelson Y. Dzade
  5. Babasaheb R. Sankapal
License In Copyright (Rights Reserved)
Work Type Article
Publisher
  1. Chemical Engineering Journal
Publication Date February 1, 2022
Publisher Identifier (DOI)
  1. https://doi.org/10.1016/j.cej.2021.132505
Deposited January 13, 2022

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  • Created
  • Added Final-Manuscript-VxTey-MWCNTs_supercapacitor.docx
  • Added Creator Bidhan Pandit
  • Added Creator Sachin R. Rondiya
  • Added Creator Russell W. Cross
  • Added Creator Nelson Y. Dzade
  • Added Creator Babasaheb R. Sankapal
  • Published
  • Updated
  • Updated