STEAM-GAS ACTIVATION OF THE CARBONIZED BIOMASS FOR THE PREPARATION OF ELECTRODE MATERIALS FOR SUPERCONDUCTORS

Authors

  • V.V. Pavlenko al-Farabi Kazakh National University, al-Farabi Ave., 71, Almaty, Kazakhstan
  • Z.A. Supieva Institute of Combustion Problems, Bogenbai batyr str. 172, Almaty, Kazakhstan
  • M.A Biisenbaev Institute of Combustion Problems, Bogenbai batyr str. 172, Almaty, Kazakhstan
  • M.I. Tulepov al-Farabi Kazakh National University, al-Farabi Ave., 71, Almaty, Kazakhstan; Institute of Combustion Problems, Bogenbai batyr str., 172, Almaty, Kazakhstan
  • N.G. Prikhodko Institute of Combustion Problems, Bogenbai batyr str. 172, Almaty, Kazakhstan
  • A.P. Kurbatov al-Farabi Kazakh National University, al-Farabi Ave., 71, Almaty, Kazakhstan

Keywords:

steam-gas activation, walnut shells, activated carbon, electrochemical capacitor

Abstract

The paper considers the possibility of obtaining high-quality activated carbons (ACs) based on walnut shells (WS) obtained by carbonization and subsequent activation by water vapor, their porous structure and performance characteristics in the composition of electrochemical capacitors. The physical activation of walnut shell by the vapor-gas mixture is characterized by high yield of solid carbon having a well-developed porous texture. It is found that increasing the pressure of saturated vapor at high activation temperatures leads to the formation of microporous carbons with a high specific surface area. When using the obtained carbon materials in supercapacitors assembled with the aqueous electrolyte (1 mol • l-1 Li2SO4), the discharge capacity is
up to 100 F • g-1 (by weight of one electrode) which is comparable to commercially available ACs.

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Published

2017-02-06

How to Cite

Pavlenko, V., Supieva, Z., Biisenbaev, M., Tulepov, M., Prikhodko, N., & Kurbatov, A. (2017). STEAM-GAS ACTIVATION OF THE CARBONIZED BIOMASS FOR THE PREPARATION OF ELECTRODE MATERIALS FOR SUPERCONDUCTORS. Combustion and Plasma Chemistry, 15(1), 74–79. Retrieved from https://cpc-journal.kz/index.php/cpcj/article/view/241

Issue

Vol. 15 No. 1 (2017): COMBUSTION AND PLASMA CHEMISTRY

Section

Статьи

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