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Composite Supercapacitor Electrodes Made of Activated Carbon/PEDOT:PSS and Activated Carbon/doped PEDOT

Publication Type : Journal Article

Thematic Areas : Nanosciences and Molecular Medicine

Publisher : Bulletin of Materials Science

Source : Bulletin of Materials Science, Volume 36, Number 4, p.547-551 (2013)

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Keywords : 4-ethylenedioxythiophene):poly(styrenesulfonate), Activated carbon, Ball milling, Carbon material, Composite materials, Conducting polymers, Data storage equipment, Dimethyl sulfoxide, Dimethyl sulfoxide (DMSO), Doping (additives), Electrochemical behaviour, Electrodeposition, Electrodes, Electrolytic capacitors, Electronic conductivity, Electropolymerization, Energy storage, Energy storage and conversions, Energy storage systems, Nanotechnology, Organic solvents, Poly(3, Supercapacitor electrodes, Thin films

Campus : Kochi

School : Center for Nanosciences

Center : Amrita Center for Nanosciences and Molecular Medicine Move, Nanosciences

Department : Nanosciences

Year : 2013

Abstract : In this paper, we report on the high electrical storage capacity of composite electrodes made from nanoscale activated carbon combined with either poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) or PEDOT doped with multiple dopants such as ammonium persulfate (APS) and dimethyl sulfoxide (DMSO). The composites were fabricated by electropolymerization of the conducting polymers (PEDOT:PSS, doped PEDOT) onto the nanoscale activated carbon backbone, wherein the nanoscale activated carbon was produced by ball-milling followed by chemical and thermal treatments. Activated carbon/PEDOT:PSS yielded capacitance values of 640 F g-1 and 26mF cm-2, while activated carbon/doped PEDOT yielded capacitances of 1183 F g-1 and 42 mF cm-2 at 10 mV s-1. This is more than five times the storage capacity previously reported for activated carbon-PEDOT composites. Further, use of multiple dopants in PEDOT improved the storage performance of the composite electrode well over that of PEDOT:PSS. The composite electrodes were characterized for their electrochemical behaviour, structural and morphological details and electronic conductivity and showed promise as high-performance energy storage systems. © Indian Academy of Sciences.

Cite this Research Publication : T. S. Sonia, Mini, P. A., Nandhini, R., Sujith, K., ,, Subramanian, K. R. V., and Shantikumar V Nair, “Composite Supercapacitor Electrodes Made of Activated Carbon/PEDOT:PSS and Activated Carbon/doped PEDOT”, Bulletin of Materials Science, vol. 36, pp. 547-551, 2013.

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