Journal
JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE
Volume 10, Issue 2, Pages 281-285Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1016/j.jtusci.2015.07.004
Keywords
Conducting polymer; Polyaniline; Pseudocapacitors; Flexible electrode; Energy density
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In this paper, polyaniline is deposited using a spraying technique onto a flexible current collector for pseudocapacitor applications. The polyaniline is characterized using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and optical absorption studies. The energy density of a pseudocapacitor is higher than that of double-layer supercapacitors due to Faradaic reactions. A high specific capacitance of 594.92 F/g is obtained at a scan rate of 5 mV/s with a scanning potential window of (-0.8 to 0.8 V). The results show an increase in the energy density of 82.63 W h/kg at a potential difference of 1 V using a 4 M potassium hydroxide aqueous electrolyte. (C) 2015 The Authors. Production and hosting by Elsevier B.V. on behalf of Taibah University.
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