Hydrothermal Carbons from Hemicellulose-Derived Aqueous Hydrolysis Products as Electrode Materials for Supercapacitors
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Title: | Hydrothermal Carbons from Hemicellulose-Derived Aqueous Hydrolysis Products as Electrode Materials for Supercapacitors |
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Authors: | Falco, Camillo | Sieben, Juan Manuel | Brun, Nicolas | Sevilla Solís, Marta | Van der Mauelen, Torbjorn | Morallon, Emilia | Cazorla-Amorós, Diego | Titirici, Maria-Magdalena |
Research Group/s: | Electrocatálisis y Electroquímica de Polímeros | Materiales Carbonosos y Medio Ambiente |
Center, Department or Service: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Keywords: | Biomass | Carbon | Green chemistry | Microporous materials | Supercapacitors |
Knowledge Area: | Química Física | Química Inorgánica |
Issue Date: | Feb-2013 |
Publisher: | Wiley-VCH Verlag GmbH & Co. KGaA |
Citation: | ChemSusChem. 2013, 6(2): 374-382. doi:10.1002/cssc.201200817 |
Abstract: | Acid pretreatment of lignocellulosic biomass, required for bioethanol production, generates large amounts of by-products, such as lignin and hydrolyzed hemicellulose fractions, which have found so far very limited applications. In this work, we demonstrate how the recovered hemicellulose hydrolysis products can be effectively utilized as a precursor for the synthesis of functional carbon materials through hydrothermal carbonization (HTC). The morphology and chemical structure of the synthesized HTC carbons are thoroughly characterized to highlight their similarities with glucose-derived HTC carbons. Furthermore, two routes for introducing porosity within the HTC carbon structure are presented: i) silica nanoparticle hard-templating, which is shown to be a viable method for the synthesis of carbonaceous hollow spheres; and ii) KOH chemical activation. The synthesized activated carbons (ACs) show an extremely high porosity (pore volume≈1.0 cm3 g−1) mostly composed of micropores (90 % of total pore volume). Because of their favorable textural properties, the ACs are further tested as electrodes for supercapacitors, yielding very promising results (300 F g−1 at 250 mA g−1) and confirming the high suitability of KOH-activated HTC carbons derived from spruce and corncob hydrolysis products as materials for electric double layer supercapacitors. |
Sponsor: | Financial support by the Ministerio de Ciencia e Innovación (MAT2010-15273 and CTQ2009-10813) and Generalitat Valenciana and FEDER (PROMETEO/2009/047 and ACOMP2012/133) projects are gratefully acknowledged. J.M.S. thanks Ministerio de Educación (SB2010-132). |
URI: | http://hdl.handle.net/10045/42793 |
ISSN: | 1864-5631 (Print) | 1864-564X (Online) |
DOI: | 10.1002/cssc.201200817 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim |
Peer Review: | si |
Publisher version: | http://dx.doi.org/10.1002/cssc.201200817 |
Appears in Collections: | INV - GEPE - Artículos de Revistas INV - MCMA - Artículos de Revistas |
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File | Description | Size | Format | |
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2013_Falco_etal_ChemSusChem.pdf | Versión final (acceso restringido) | 954,91 kB | Adobe PDF | Open Request a copy |
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