V2O5 encapsulated MWCNTs in 2D surface architecture: Complete solid-state bendable highly stabilized energy efficient supercapacitor device Articles uri icon

authors

  • PANDIT, BIDHAN
  • DUBAL, DEEPAK P.
  • GOMEZ-ROMERO, PEDRO
  • KALE, BHARAT B.
  • SANKAPAL, BABASAHEB R.

publication date

  • March 2017

start page

  • 1

end page

  • 12

issue

  • 43430

volume

  • 7

International Standard Serial Number (ISSN)

  • 2045-2322

abstract

  • A simple and scalable approach has been reported for V2O5 encapsulation over interconnected multi-walled carbon nanotubes (MWCNTs) network using chemical bath deposition method. Chemically synthesized V2O5/MWCNTs electrode exhibited excellent charge-discharge capability with extraordinary cycling retention of 93% over 4000 cycles in liquid-electrolyte. Electrochemical investigations have been performed to evaluate the origin of capacitive behavior from dual contribution of surface-controlled and diffusion-controlled charge components. Furthermore, a complete flexible solid-state, flexible symmetric supercapacitor (FSS-SSC) device was assembled with V2O5/MWCNTs electrodes which yield remarkable values of specific power and energy densities along with enhanced cyclic stability over liquid configuration. As a practical demonstration, the constructed device was used to lit the VNIT acronym assembled using 21 LEDs.

subjects

  • Chemistry
  • Industrial Engineering
  • Materials science and engineering

keywords

  • structured vanadium-oxide; thin-films; electrochemical properties; capacitance; temperature; electrodes; mno2; composites; morphology; density