Modified carbon-graphite materials for energy generation and accumulation devices

Authors

  • Роман Ярославович Швець Lviv Polytechic National University Bandery 12, Lviv, 79013, Ukraine
  • Іван Іванович Григорчак Lviv Polytechic National University Bandery 12, Lviv, 79013, Ukraine
  • Юрій Орестович Кулик Ivan Franko National University of Lviv Universytetska 1, Lviv, 79000, Ukraine
  • Надія Теофілівна Покладок Lviv Polytechic National University Bandery 12, Lviv, 79013, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2012.5710

Keywords:

intercalation, impedance spectroscopy, small-angle X-ray scattering, oxidized graphite, pseudocapacitorintercalation, pseudocapacitor

Abstract

The article includes the developed methods of natural graphite modification for its effective use as a cathode material of lithium power sources. It was determined that nanohybridization of thermally expanded graphite with organic thiourea increases the energy capacity Li+ - intercalation galvanic reaction. This paper analyzes in detail the structure of the modified graphite and its physical properties. In particular, by small-angle X-ray scattering method, it was revealed that in the oxidized graphite the invariant Species is significantly lower than the same parameter for graphite bisulfate. This depends on a decrease of the scattering approximately by 5 times on electronic inhomogeneities. The heat treatment of graphite bisulfate at 600 and 800 оС increases the poral volume by about 4 times. For the first time, the supramolecular ensemble of mesoporous graphite – ferrocene was synthesized, as an active material for pseudocapacitors, which provides the increase of the specific capacity of initial activated carbon

Author Biographies

Роман Ярославович Швець, Lviv Polytechic National University Bandery 12, Lviv, 79013

Postgraduate student

Department of Materials Engineering and Applied Physics

Іван Іванович Григорчак, Lviv Polytechic National University Bandery 12, Lviv, 79013

Professor

Department of Materials Engineering and Applied Physics

Юрій Орестович Кулик, Ivan Franko National University of Lviv Universytetska 1, Lviv, 79000

PhD, Assistant

Department of Metal Physics

Надія Теофілівна Покладок, Lviv Polytechic National University Bandery 12, Lviv, 79013

PhD, Assistant

Department of Physics

References

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Published

2012-12-17

How to Cite

Швець, Р. Я., Григорчак, І. І., Кулик, Ю. О., & Покладок, Н. Т. (2012). Modified carbon-graphite materials for energy generation and accumulation devices. Eastern-European Journal of Enterprise Technologies, 6(5(60), 4–8. https://doi.org/10.15587/1729-4061.2012.5710

Issue

Vol. 6 No. 5(60) (2012): THE APPLIED PHYSICS AND MATERIALS TECHNOLOGY

Section

Applied physics

License

Copyright (c) 2014 Роман Ярославович Швець, Іван Іванович Григорчак, Юрій Орестович Кулик, Надія Теофілівна Покладок

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