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Issue 53, 2020, Issue in Progress
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The role of carbon nanotubes in enhanced charge storage performance of VSe2: experimental and theoretical insight from DFT simulations

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Abstract

Herein, we report the hybrid structure of metallic VSe2 and multi-walled carbon nanotube (MWCNT) based hybrid materials for high performance energy storage and high power operation applications. The dominance of capacitive energy storage performance behaviour of VSe2/MWCNT hybrids is observed. A symmetric supercapacitor cell device fabricated using VSe2/80 mg MWCNT delivered a high energy density of 46.66 W h kg−1 and a maximum power density of 14.4 kW kg−1 with a stable cyclic operation of 87% after 5000 cycles in an aqueous electrolyte. Using density functional theory calculations we have presented structural and electronic properties of the hybrid VSe2/MWCNT structure. Enhanced states near the Fermi level and higher quantum capacitance for the hybrid structure contribute towards higher energy and power density for the nanotube/VSe2.

Graphical abstract: The role of carbon nanotubes in enhanced charge storage performance of VSe2: experimental and theoretical insight from DFT simulations

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Supplementary files

Article information


Submitted
12 Jul 2020
Accepted
17 Aug 2020
First published
27 Aug 2020

This article is Open Access

RSC Adv., 2020,10, 31712-31719
Article type
Paper

The role of carbon nanotubes in enhanced charge storage performance of VSe2: experimental and theoretical insight from DFT simulations

S. R. K. A., A. S. Shajahan, B. Chakraborty and C. S. Rout, RSC Adv., 2020, 10, 31712
DOI: 10.1039/D0RA06773C

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