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Title: Nanostructured nickel doped β-V{sub 2}O{sub 5} thin films for supercapacitor applications

Graphical abstract: - Highlights: • Nanorod with pores has been observed for 5 wt.% nickel doped β-V{sub 2}O{sub 5} thin films. • Film with 5 wt.% of nickel exhibits a specific capacitance of 417 F g{sup −1}. • These films exhibit high energy density. • The charge transfer resistance is 103 Ω. - Abstract: Interesting thin film electrodes of nickel doped vanadium pentoxide with different levels of doping (2.5–10 wt.%) are prepared on FTO and glass substrate at 300 °C using sol–gel spin coating method. The structural and morphological studies are made to understand the nature of the surface of the thin films. The electrochemical characteristics have been investigated through cyclic voltammetry and ac impedance spectroscopy measurements. The doping of nickel with β-V{sub 2}O{sub 5} has led to enhanced intercalation and deintercalation of ions. β-V{sub 2}O{sub 5} films with 5 wt.% of Ni exhibit the maximum specific capacitance of 417 F/g at a scan rate of 5 mV/s, with a good cyclic stability making it a promising candidate for supercapacitor application.
Authors:
 [1] ;  [2] ;  [3] ;  [2]
  1. Department of Physics, PSNA College of Engineering and Technology, Dindigul 624622 (India)
  2. Department of Physics, Gandhigram Rural Institute, Gandhigram 624302 (India)
  3. Department of Physics, TRP Engineering College, Trichy (India)
Publication Date:
OSTI Identifier:
22290469
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 48; Journal Issue: 7; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CAPACITANCE; DOPED MATERIALS; ELECTROCHEMISTRY; ENERGY DENSITY; ENERGY STORAGE; GLASS; IMPEDANCE; NANOSTRUCTURES; NICKEL; SPIN-ON COATING; SUBSTRATES; THIN FILMS; VANADATES; VANADIUM OXIDES