Wood-Based Activated Carbons for Supercapacitors with Organic Electrolyte
Holzforschung 2015
Gaļina Dobele, Aleksandrs Voļperts, Gaļina Teliševa, Aivars Žūriņš, Daria Vervikishko, Anatoly Sametov, Evgeny Shkolnikov, Jurijs Ozoliņš

The thermocatalytical synthesis conditions required for the activation of wood charcoal with NaOH in terms of the formation of pores in its structure were investigated. The present study was conducted to explore the potential application of activated carbons as electrodes in supercapacitors with organic electrolyte. The total pore volume and micro-and mesopore ratio were controlled by the activation temperature and alkali addition rate. The working characteristics of carbon electrodes (e.g., specific capacity and ohmic losses) in supercapacitors are strongly influenced by the properties of the pores in their structures. Herein, the optimal ratio of raw material to activator and activation temperature are established: an increase in the ratio of NaOH to carbonizate rate by a factor of 2 and setting the synthesis temperature at 700 degrees C positively influence the electrochemical characteristics of supercapacitors and provide them with specific capacities of up to 160 F g(-1).

Atslēgas vārdi
activated carbon; alkali activation; porous structure; supercapacitors; wood pyrolysis

Dobele, G., Voļperts, A., Teliševa, G., Žūriņš, A., Vervikishko, D., Sametov, A., Shkolnikov, E., Ozoliņš, J. Wood-Based Activated Carbons for Supercapacitors with Organic Electrolyte. Holzforschung, 2015, Vol.69, Iss.6, 777.-784.lpp. ISSN 0018-3830. e-ISSN 1437-434X. Pieejams: doi:10.1515/hf-2014-0272

Publikācijas valoda
English (en)
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