Preparation and characterization of a pseudocapacitor electrode by spraying a conducting polymer onto a flexible substrate
By Ebrahim, Shaker A.; Harb, Mohamed E.; Soliman, Moataz M.; Tayel, Mazhar B.
Published in Journal of Taibah University for Science
NULL
2016
Abstract
Abstract 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.
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