English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/181004
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Biocarbon monoliths as supercapacitor electrodes: Influence of wood anisotropy on their electrical and electrochemical properties

AuthorsCuña, Andrés; Tancredi, Nestor; Bussi, Juan; Barranco, Violeta ; Centeno, Teresa A.; Quevedo, Angie; Rojo, J. M.
Issue Date21-Aug-2014
PublisherElectrochemical Society
CitationJournal of the Electrochemical Society 161(12): A1806-A1811 (2014)
AbstractAll rights reserved. Biocarbon monoliths were obtained from Eucalyptus grandis and the influence of wood anisotropy on the electrical and electrochemical performance as supercapacitor electrodes was studied. They were produced from wood pieces cut along the transversal and longitudinal direction of the tree trunk, followed by pyrolysis and, for some of them, also by activation with CO2. Monoliths with drilled channels were also obtained. All the monoliths were characterized by SEM, nitrogen adsorption/desorption isotherms, electrical conductivity measurements and electrochemical measurements, the latter in 2M aqueous H2SO4 electrolyte. Electrical conductivity and specific capacitance are higher for the transversal carbon monoliths than for the longitudinal ones. The electrical conductivity reaches values up to 27 S cm-1 for the transversal monolith. The specific capacitance reaches values up to 260 F g-1for the transversal monolith that was activated and drilled. However, the highest volumetric capacitance, of 90 F cm-3, is found for the longitudinal monolith that was activated and non-drilled. The energy density and power density, both referred to gravimetric and volumetric magnitudes, reach values as high as 36 Wh kg-1 and 12 Wh L-1, and 2181 W kg-1 and 783 W L-1, respectively. Comparison with a commercial powder activated carbon is provided.
Publisher version (URL)http://doi.org/10.1149/2.0391412jes
URIhttp://hdl.handle.net/10261/181004
DOI10.1149/2.0391412jes
ISSN0013-4651
E-ISSN1945-7111
Appears in Collections:(ICMM) Artículos
(INCAR) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.