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Electrochemical capacitors with plasticized gel-polymer electrolytes

Mitra, S and Shukla, AK and Sampath, S (2001) Electrochemical capacitors with plasticized gel-polymer electrolytes. In: Journal of Power Sources, 101 (2). pp. 213-218.

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Solid electrolytes which comprise lithium and magnesium triflate ionic salts in polyacrylonitrile (PAN)-based gels are used to fabricate electrochemical double-layer capacitors in conjunction with ethylene carbonate (EC) and propylene carbonate (PC) as plasticizers and high-density graphite (HDG) as polarizable electrodes. The conductivity of the solid electrolytes is around $10 ^-^3 S cm ^-^1$ at ambient temperatures. Composites which consist of PAN+EC+PC+electrolyte are electrochemically stable over a wide potential range. Cells of the type: HDG/PAN–EC–PC–Li and Mg-triflate/HDG exhibit single-electrode discharge capacitance values of 480 and 383 $\mu F cm^-^2$ , respectively, with attractive charge–discharge characteristics.

Item Type: Journal Article
Publication: Journal of Power Sources
Publisher: Elsevier
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: Magnesium ion conductor;Solid electrolyte;Polymer-gel; Electrochemical capacitor;High density graphite;Power source
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 15 Mar 2007
Last Modified: 19 Sep 2010 04:36
URI: http://eprints.iisc.ac.in/id/eprint/10363

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