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Improvement of supercapacitor parameters by nickel ion intercalation into activated carbon

Venhryn B. Y., Grygorchak I. I., Kulyk Y. O., Mudry S. I.

Materials Science Poland

2013

Vol. 31, No. 1

126-132

The relation between the porous structure and the electron structure in carbon materials was investigated in order to optimize the effiency of the physical-chemical processes in an electric double layer (EDL) formed at the boundary between the carbon material and the electrolyte (KOH 30 % aqueous solution). In particular, an Ni2+ intercalative modification of nanoporous carbon resulted in more than a triple increase in the specific capacitance and a significant improvement of the charge-discharge kinetics in the EDL.