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

Journal Article · Mon Jul 15 04:00:00 EDT 2013 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2013.03.007· OSTI ID:22290469

Jeyalakshmi, K. ^[1]; Vijayakumar, S. ^[2]; Purushothaman, K. K. ^[3]

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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)

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.

• OSTI ID: 22290469
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 7 Vol. 48; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CAPACITANCE
DOPED MATERIALS
ELECTROCHEMISTRY
ENERGY DENSITY
ENERGY STORAGE
GLASS
IMPEDANCE
NANOSTRUCTURES
NICKEL
SPIN-ON COATING
SUBSTRATES
THIN FILMS
VANADATES
VANADIUM OXIDES