Activated carbon from cassava peel: A promising electrode material for supercapacitors/Carbones activados a partir de cascara de yuca: Un potencial material como electrodo en supercondensadores

Supercapacitors are conventional devices in electrical circuits that produce electrical pulses at high power levels in short periods. Electrodes for supercapacitors were prepared with activated carbon. Activated carbon was obtained from cassava peels treated by chemical activation with potassium hyd...

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Bibliographic Details
Published in:Revista Facultad de Ingeniería 2022-01 (102), p.88
Main Authors: Ospino, Julie, Parra-Barraza, Juliana Paola, Cervera, Sigifredo, Coral-Escobar, Euler E, Vargas-Ceballos, Oscar Andres
Format: Article
Language:Spanish
Subjects:
Capacitors
Electrochemistry
Hydroxides
Phosphates
Phosphoric acid
Sulfuric acid
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Summary:Supercapacitors are conventional devices in electrical circuits that produce electrical pulses at high power levels in short periods. Electrodes for supercapacitors were prepared with activated carbon. Activated carbon was obtained from cassava peels treated by chemical activation with potassium hydroxide (KOH) and phosphoric acid ([H.sub.3][PO.sub.4]), each at two different concentrations and at one carbonization temperature. The electrochemical performance of the prepared electrodes was obtained by means of cyclic voltammetry and galvanostatic charge-discharge in a 3-electrode system with an electrolytic solution of sulfuric acid ([H.sub.2][SO.sub.4]) 1 M. Cyclic voltammetry allowed identifying the behavior of supercapacitors in a potential window of -0.4V to 0.6V Activated carbon derived from cassava peel with the highest specific surface area (398.46 (m.sup.2)/g) has exhibited the maximum specific capacitance of 64.18 F/g.
ISSN:0120-6230
DOI:10.17533/udea.redin.20200803