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Rychagov A. Y., Izmaylova M. Y., Vol'fkovich Y. M., Sosenkin V. E., Den'shchikov K. K. Electrochemical behavior of superfine carbon in electrolytes based on ionic liquid 1-methyl-3-butylimidazol tetrafluorborate. Electrochemical Energetics, 2015, vol. 15, iss. 1, pp. 3-13. DOI: 10.18500/1608-4039-2015-15-1-3-13, EDN: UDFJGB

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Electrochemical behavior of superfine carbon in electrolytes based on ionic liquid 1-methyl-3-butylimidazol tetrafluorborate

Rychagov Aleksei Yur'evich, Institute of Physical Chemistry and Electrochemistry of A. N. Frumkina of RAS
Izmaylova Marianna Yur'evna, Joint Institute of high Temperatures of RAS (OIVT RAS)
Vol'fkovich Yurii Mironovich, Institute of Physical Chemistry and Electrochemistry of A. N. Frumkina of RAS
Sosenkin V. E., Institute of Physical Chemistry and Electrochemistry of A. N. Frumkina of RAS
Den'shchikov Konstantin Konstantinovich, Joint Institute of high Temperatures of RAS (OIVT RAS)

A various features of the electrochemical behavior of number superfine carbon materials in electrolyte based on an ionic liquid 1-methyl-3-butilimidazolium tetrafluorineborate (1Me3BuImBF4) were determined by voltammetry and impedance methods. A comparative analysis of the effect of the type and nature of the electrolyte material on the main electrochemical characteristics of carbon electrodes which may be used in supercapacitors was done. The effect of the impurities of water in the ionic liquid, as well as the influence of the crystal, semiconductor and structural properties of carbon materials to their electrochemical behavior was shown. A simplified equivalent circuit describing the impedance of superfine electrodes in ionic liquid was proposed. Data obtained by using the reference method of contact porosimetry and X-ray photoemission analysis can be used for the optimization of the activated carbon. Activated carbon is the most common used material for supercapacitors.


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