Synthesising of ZnO nanopetals for supercapacitor applications
Synthesising of ZnO nanopetals for supercapacitor applications
- Author(s): K.K. Purushothaman ; V. Suba Priya ; S. Nagamuthu ; S. Vijayakumar ; G. Muralidharan
- DOI: 10.1049/mnl.2011.0260
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- Author(s): K.K. Purushothaman 1 ; V. Suba Priya 2 ; S. Nagamuthu 2 ; S. Vijayakumar 2 ; G. Muralidharan 2
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View affiliations
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Affiliations:
1: Department of Physics, TRP Engineering College (SRM), Trichy, India
2: Department of Physics, Gandhigram Rural Institute – Deemed University, Gandhigram, India
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Affiliations:
1: Department of Physics, TRP Engineering College (SRM), Trichy, India
- Source:
Volume 6, Issue 8,
August 2011,
p.
668 – 670
DOI: 10.1049/mnl.2011.0260 , Online ISSN 1750-0443
ZnO nanopowders have been synthesised using the spray pyrolysis method. XRD analysis reveals the powder samples to be of crystallite size 19 nm. SEM images indicate petal-like formation for the zinc oxide powder. The electrochemical properties have been studied using cyclic-voltammetric and chrono-potentiometric techniques. The specific capacitance of the ZnO electrode in the presence of 2M KOH electrolyte was 365 F/g at a scan rate of 5 mV/s. The decrease in the specific capacitance of 22% has been observed after 1200 cycles.
Inspec keywords: electrochemical electrodes; capacitance; X-ray diffraction; supercapacitors; powders; wide band gap semiconductors; scanning electron microscopy; pyrolysis; II-VI semiconductors; nanofabrication; nanoparticles; spraying; crystallites; electrochemistry; zinc compounds; semiconductor growth; voltammetry (chemical analysis)
Other keywords:
Subjects: Decomposition reactions (pyrolysis, dissociation, and group ejection); Structure of powders and porous materials; Microstructure; Capacitors; Low-dimensional structures: growth, structure and nonelectronic properties; Electrochemical analytical methods; Electrochemical conversion and storage; Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials; Nanometre-scale semiconductor fabrication technology; Electrochemistry and electrophoresis; Methods of nanofabrication and processing
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