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

A. M. Skundin; Скундин А. М.; D. Y. Gryzlov; Грызлов Д. Ю.; A. Y. Rychagov; Рычагов А. Ю.; F. A. Voroshilov; Ворошилов Ф. А.; T. L. Kulova; Кулова Т. Л.; V. N. Andreev; Андреев В. Н.

doi:10.7868/S3034618525080015

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

作者: Skundin A.M.¹, Gryzlov D.Y.¹, Rychagov A.Y.¹, Voroshilov F.A.², Kulova T.L.¹, Andreev V.N.¹
隶属关系:
1. Institute of Physical Chemistry and Electrochemistry named after A. N. Frumkin RAS
2. Tomsk Polytechnic University
期: 卷 61, 编号 8 (2025)
页面: 357-363
栏目: Regular articles
URL: https://ogarev-online.ru/0424-8570/article/view/352852
DOI: https://doi.org/10.7868/S3034618525080015
ID: 352852

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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.

关键词

supercapacitor, anhydrous hydrogen fluoride, low temperatures

参考

Simons, J.H., Hydrogen fluoride and its solution, Chem. Rev., 1931, vol. 8, p. 213. https://doi.org/10.1021/cr60030a004
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
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
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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卷 61, 编号 9 (2025)

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

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A. Skundin

D. Gryzlov

A. Rychagov

F. Voroshilov

T. Kulova

V. Andreev

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