Journal of Solid State Electrochemistry

, Volume 18, Issue 8, pp 2217–2223

An activated carbon supercapacitor analysis by using a gel electrolyte of sodium salt-polyethylene oxide in an organic mixture solvent

  • Chandrasekaran Ramasamy
  • Jesús Palma del vel
  • Marc Anderson
Original Paper

DOI: 10.1007/s10008-014-2466-3

Cite this article as:
Ramasamy, C., Palma del vel, J. & Anderson, M. J Solid State Electrochem (2014) 18: 2217. doi:10.1007/s10008-014-2466-3

Abstract

A gel electrolyte of sodium bis(trifluoromethanesulfonyl)imide (NaTFSI)-polyethylene oxide (PEO) in an organic solvent mixture has been prepared and examined for supercapacitor applications by using activated carbon electrodes. The solvent was a mixture of propylene carbonate, dimethyl carbonate, and ethylene carbonate at equal molar ratio, and also, a propylene carbonate-based gel was used for a comparison. The polymer-salt interaction was viewed by infrared spectral study. The cells have been characterized in a two-electrode type using linear sweep voltammetry, cyclic voltammetry, galvanostatic cycling, and impedance techniques at 22 °C. The voltammograms evidence symmetry and reversibility of the cells. The ternary gel has shown better electrochemical performances. Moreover, the cell operative potential window was found to be stable at 2.5 V with high specific capacitance and also a good efficiency at low charge rate. The typical obtained specific capacitance, real power, and energy density values are 24 F g−1, 0.52 kW kg−1, and 18.7 Wh kg−1, respectively, which may be viewable for a compact capacitor.

Keywords

SupercapacitorSodium-organic gelPolyethylene oxideActivated carbon

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Chandrasekaran Ramasamy
    • 1
  • Jesús Palma del vel
    • 1
  • Marc Anderson
    • 1
  1. 1.Electrochemical Processes UnitInstituto IMDEA EnergíaMóstolesSpain