English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/127442
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

High-surface area carbons from renewable sources with a bimodal micro-mesoporosity for high-performance ionic liquid-based supercapacitors

AutorFuertes Arias, Antonio Benito ; Sevilla Solís, Marta
Fecha de publicación19-jun-2015
EditorElsevier
CitaciónCarbon 94: 41-52 (2015)
ResumenHighly porous materials with a bimodal pore size distribution in the micro-mesopore range have been produced from biomass by adding melamine to the hydrochar/KOH mixture used in the activation process. These carbons are characterized by BET surface areas in excess of ∼3300 m2 g−1 and a porosity equally distributed between micropores and mesopores. The use of melamine in the synthesis process not only extends the pore size distribution into the mesopore region, but leads to the incorporation of a certain amount of nitrogen atoms into the carbon framework. These materials combine high ion adsorption capacities (micropores) and enhanced ion-transport kinetics (mesopores) leading to an outstanding capacitive performance in ionic liquid-based supercapacitors. Thus, they have specific capacitances >160 F g−1 at 1 A g−1 and >140 F g−1 at 60 A g−1 in both pure ionic liquid and in acetonitrile-diluted ionic liquid, enabling these materials to store up to a maximum of ca. 60 W h kg−1 in both kinds of electrolytes and deliver ca. 20 W h kg−1 at ∼42 kW kg−1 (discharge time ca. 2 s) in pure ionic liquid and ∼25–30 W h kg−1 at ∼97–100 kW kg−1 (discharge time ∼1 s) in acetonitrile-diluted ionic liquid.
Versión del editorhttp://dx.doi.org/10.1016/j.carbon.2015.06.028
URIhttp://hdl.handle.net/10261/127442
DOI10.1016/j.carbon.2015.06.028
ISSN0008-6223
Aparece en las colecciones: (INCAR) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
High-surface_Fuertes_2015.pdf911,21 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.