Biomass waste conversion into low-cost carbon-based materials for supercapacitors: A sustainable approach for the energy scenario
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Title: | Biomass waste conversion into low-cost carbon-based materials for supercapacitors: A sustainable approach for the energy scenario |
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Authors: | Chaparro-Garnica, Jessica | Mostazo-López, María José | Salinas-Torres, David | Morallon, Emilia | Cazorla-Amorós, Diego |
Research Group/s: | Materiales Carbonosos y Medio Ambiente | Electrocatálisis y Electroquímica de Polímeros |
Center, Department or Service: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Materiales |
Keywords: | Hydrothermal carbonization | Biomass waste | Phosphoric acid | Nitrogen doping | Activated carbon | Supercapacitor |
Knowledge Area: | Química Inorgánica | Química Física |
Issue Date: | 1-Jan-2021 |
Publisher: | Elsevier |
Citation: | Journal of Electroanalytical Chemistry. 2021, 880: 114899. https://doi.org/10.1016/j.jelechem.2020.114899 |
Abstract: | Biomass upgrading is a promising approach to face the current energy consumption and chemicals production. Lignocellulosic biomass residues have taken the lead in this field. In this study, hemp residue-based activated carbons (ACs) were prepared by H3PO4-assisted hydrothermal carbonization (HTC) using a low concentration of H3PO4 (25 wt%). ACs with a high porosity development were obtained (SBET > 1200 m2 g−1), and they were subsequently functionalized with nitrogen groups using mild conditions. As-synthesized ACs were also heat-treated to enhance the electrical conductivity, improving the electrochemical performance. As a proof of concept, electrochemical capacitors (ECs) based on as-prepared ACs in aqueous and organic electrolytes, showing energy densities comparable to those of a capacitor based on an AC used in commercial capacitors. The most attractive outcome of this study is the straightforward, cost-effective, and sustainable methodology to prepare high added-value functional ACs with great potential for energy and environmental applications. |
Sponsor: | This research was partially supported by the MICINN, FEDER (RTI2018-095291-B-I00). JCG thanks for her predoctoral scholarship (GRISOLIA/2018/105) funded by the Generalitat Valenciana and DST thanks MICINN for the “Juan de la Cierva” contract (IJCI-2016-27636). |
URI: | http://hdl.handle.net/10045/113386 |
ISSN: | 1572-6657 (Print) | 1873-2569 (Online) |
DOI: | 10.1016/j.jelechem.2020.114899 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © 2020 Elsevier B.V. |
Peer Review: | si |
Publisher version: | https://doi.org/10.1016/j.jelechem.2020.114899 |
Appears in Collections: | INV - MCMA - Artículos de Revistas INV - GEPE - Artículos de Revistas |
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File | Description | Size | Format | |
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Chaparro-Garnica_etal_2021_JElectroanalChem_final.pdf | Versión final (acceso restringido) | 1,11 MB | Adobe PDF | Open Request a copy |
Chaparro-Garnica_etal_2021_JElectroanalChem_preprint.pdf | Preprint (acceso abierto) | 2,34 MB | Adobe PDF | Open Preview |
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