2nd International Conference on Chemo and Bioinformatics ICCBIKG 2023 (253-256)
АУТОР(И) / AUTHOR(S): Jana Mišurović, Aleksandra Gezović, Veselinka Grudić, Milica Vujković
Е-АДРЕСА / E-MAIL: janam@ucg.ac.me
DOI: 10.46793/ICCBI23.253M
САЖЕТАК / ABSTRACT:
Vine shoots, abundant by-products of the wine industry, were used as biomass resources for obtaining activated carbon (ACvs) through a simple two-step activation/carbonization process with ZnCl2 as an activator. The physicochemical characterization including N2 physisorption, FTIR and XRD analysis, revealed that the resulting carbon exhibits a high specific surface area and has low surface functionality. Carbon electrochemistry was investigated in three different non-conventional Al-ion containing aqueous electrolytes – sulphate, nitrate, and chloride. Through a comparative analysis it was observed that anion type had a major influence on the electrochemical behaviour of activated carbon. ACvs showed excellent charge storage properties in all three electrolytes in a wide operating voltage of 1,35 V, reaching the best value of specific capacitance of 235 F g-1 at 20 mV s-1 in 1 M Al(NO3)3. Apart from contributing to the fundamental understanding of carbon interfacial processes in unconventional electrolytes, these findings open up exciting possibilities for advancing aqueous supercapacitor technology using sustainable and easily available biomass resources like vine shoots.
КЉУЧНЕ РЕЧИ / KEYWORDS:
biomass-derived activated carbon, Al-based carbon electrochemistry, supercapacitors
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