Scientific journal
Bulletin of Higher Educational Institutions
North Caucasus region

TECHNICAL SCIENCES


UNIV. NEWS. NORTH-CAUCAS. REG. TECHNICAL SCIENCES SERIES. 2022; 4: 102-110

 

http://dx.doi.org/10.17213/1560-3644-2022-4-102-110

 

POSSIBILITIES OF USING GRAPHITE FOIL AS AN ACTIVE MATERIAL IN ELECTROCHEMICAL CAPACITORS WITH WATER-ORGANIC ELECTROLYTE

Yu.G. Moskalev, S.A. Pozhidaeva, V.G. Teslya, E.V. Korbova, M.S. Lipkin

Moskalev Yuriy G. – Graduate Student, Department «Chemical Technology», Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia.

Pozhidaeva Svetlana А.Candidate of Technical Sciences, Associate Professor, Department «Chemical Technology», Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia.

Teslia Vasiliy G. – Applicant, Department «Chemical Technologу», Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia. teslya71@mail.ru

Korbova Ekaterina V. – Graduate Student, Department «Chemical Technology», Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia, war_wara@inbox.ru

Lipkin Mikhail S. – Doctor of Technical Sciences, Associate Professor, Head of the Department «Chemical Technology», Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia, lipkin@yandex.ru

 

Abstract

The aim of this work was to study graphite foil as an active material of electrochemical capacitors in water-organic electrolytes. The researches have been carried out using methods of voltammetry, galvanostatic cycling, electrochemical impedance spectroscopy. It has been established that in dimethyl sulphoxide based electrolyte parallel processes of reduction of anodic products of thermally expanded graphite and discharge of double layer capacity take place, the DES capacity increasing due to Faraday processes. In galvanostatic cycling the specific capacity is about 200 F/g at current densities up to 50 mA/cm2.The method of electrode process analysis based on Ragon diagrams and qualitative theory of dynamic systems trajectories on the phase plane is of interest as a method to clarify the mechanism of electrode processes in supercapacitors and other chemical current sources.

 

Keywords: supercapacitors, graphite foil, impedance spectroscopy, electrochemical capacitors, structure, electrodeposi-tion, thermal expanded graphite, Ragon diagrams, dimethyl sulphoxide

 

Full text: [in elibrary.ru]

 

References

  1. Method for preparation of non-polarizable electrode for electrochemical condenser. Patent RF, no. 2254641.
  2. Kuznetsov D.N. et al. New Technologies of Composite Electrodes of Electrochemical Capacitors. Izv. vuzov. Sev.-Kavk. region. Techn. nauki = Bulletin  of  Higher Educational  Institutions. North Caucasus  Region. Technical Sciences. 2022; (2):85–92. (In Russ.). DOI:10.17213/1560-3644-2022-2-85-92.
  3. Yakovlev A.V., Finaenov A.I., Zaboudkov S.L., Yakovlev E.V. Thermal Expanded Graphite: Synthesis, Properties and Prospects for Application (review). Journal of Applied Chemistry. 2006; 79(11):1761–1771. (In Rus.)
  4. Berezhnaya A. G., Chernyavina V. V., Sinyavin A. L. Electrochemical Parameters of Supercapacitors on Aqueous Neutral Electrolyte with Different Electrode Materials. Elektrokhimiya. 2019; 55(8):1005–1010. (In Russ.). DOI:10.1134/S0424857019080048
  5. Xu Yuelong, Ren Bin, Wang Shasha, Dong Xiaoxi. Carbon Aerogels with Oxygen-containing Surface Groups for Use in Supercapacitors. Solid State Ionics. 2019; (339):338–345. DOI:10.1016/j.ssi.2019.115005
  6. Volfkovich Yu.M., Mazin V.M., Urisson N.A. Investigation of Double-layer Capacitors Based on Carbon Materials. Electrochemistry. 1998; 34(8):825–832. (In Russ.)
  7. Rychagov A.Yu. et al. Perspective Electrode Materials for Supercapacitors. Electrochemical Energy. 2012; 12(4):167–180. (In Russ.)
  8. Rychagov A.Yu., Wolfkowitz Y.M. Features of Interaction of Activated Carbon Electrodes with Sulfuric Acid Solutions. Electrochemistry. 2006; 43(11): 1343–1349. (In Russ.)
  9. Ionov S.G. Electron Transport and Physico-chemical Properties of Intercalated Graphite Compounds and Carbon Materials Derived from Them. Dr. Eng. Sci. Diss. Moscow; 2016. 379 p.
  10. Kedrinsky I.A., Yakovlev V.G. Li-ion Batteries. 1 ed. Krasnoyarsk: Platinum; 2002. 268 p.
  11. Graphite Foil, Sheet Material Based on Foil, Sealing and Method of Making. Patent RF, no. 2706103.
  12. Group of Companies. Available at: https://unichimtek.ru/develop/tekhnologiya-polucheniya-graf itovoy-folgi-metodom-sukhogo-vspenivaniya/ (accessed 04.09.2022).
  13. Ragone D. Review of Battery Systems for Electrically Driven Vehicles. 1968. SAE technical paper 680453. DOI: 10.4271/680453.
  14. Andronov A.A., Witt A.A., Haykin S.E. Theory of Vibration. Moscow: Main Editorial Office for Physical and Mathematical Literature, Nauka Publishing House; 1959. 568 p.