ANHYDROUS HYDROGEN FLUORIDE AS A SOLVENT FOR ELECTROLYTES OF SUPERCAPACITORS OPERATING AT EXTREMELY LOW TEMPERATURES

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Abstract

In order to expand the range of electrolytes for low-temperature double-layer supercapacitors, the possibility of using a 2.5 M solution of PCl5 in anhydrous hydrogen fluoride as an electrolyte using electrodes made of activated carbon cloth CH-900-20 was investigated. It has been established that when the temperature decreases from +20 to –65°C, the specific capacity of activated carbon cloth in such an electrolyte decreases linearly from 225 to 200 F/g. Replacing PCl5 with P2O5 results in the appearance of water in the electrolyte due to neutralization and the appearance of a noticeable pseudo-capacitance at positive temperatures and a decrease in capacity at a temperature of –65°C.

About the authors

A. M. Skundin

Institute of Physical Chemistry and Electrochemistry named after A. N. Frumkin RAS

Email: askundin@mail.ru
Moscow, 119071 Russia

D. Y. Gryzlov

Institute of Physical Chemistry and Electrochemistry named after A. N. Frumkin RAS

Email: askundin@mail.ru
Moscow, 119071 Russia

A. Y. Rychagov

Institute of Physical Chemistry and Electrochemistry named after A. N. Frumkin RAS

Email: askundin@mail.ru
Moscow, 119071 Russia

F. A. Voroshilov

Tomsk Polytechnic University

Email: askundin@mail.ru
Tomsk 634050 Russia

T. L. Kulova

Institute of Physical Chemistry and Electrochemistry named after A. N. Frumkin RAS

Email: askundin@mail.ru
Moscow, 119071 Russia

V. N. Andreev

Institute of Physical Chemistry and Electrochemistry named after A. N. Frumkin RAS

Email: askundin@mail.ru
Moscow, 119071 Russia

References

  1. Simons, J.H., Hydrogen fluoride and its solution, Chem. Rev., 1931, vol. 8, p. 213. https://doi.org/10.1021/cr60030a004
  2. Грызлов, Д.Ю., Рычагов, А.Ю., Кулова, Т.Л., Скундин, А.М., Андреев, В.Н., Ворошилов, Ф.А. Низкотемператyрный суперконденсатор с электролитом на основе фтористого водорода и ионной жидкости. Электрохимия. 2022. Т. 58. С. 579. [Gryzlov, D.Yu., Rychagov, A.Yu., Kulova, T.L., Skundin, A.M., Andreev, V.N., and Voroshilov, F.A., Low Temperature Supercapacitor with Electrolyte Based on Hydrogen Fluoride and Ionic Liquid, Russ. J. Electrochem., 2022, vol. 58, p. 807.] https://doi.org/10.1134/S1023193522090075
  3. Рычагов, А.Ю., Вольфкович, Ю.М. Малообратимые процессы заряжения на высокодисперсных углеродных электродах. Электрохимия. 2009. Т. 45. С. 323. [Rychagov, A.Yu. and Volfkovich, Yu.M., Low reversible charging processes on highly dispersed carbon electrodes, Russ. J. Electrochem., 2009, vol. 45, p. 304.] https://doi.org/10.1134/S1023193509030100
  4. Ahn, H., Lee, J., Jeong, Y., Lee, J., Chi, C., and Oh, H., Nanostructured carbon cloth electrode for desalination from aqueous solutions, Mater. Sci. Eng. A, 2007, vol. 449–451, p. 841. https://doi.org/10.1016/j.msea.2006.02.448

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