From nutshells to energy cells: Pioneering supercapacitor electrodes via innovative argan nutshell activated carbon synthesis
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Título: | From nutshells to energy cells: Pioneering supercapacitor electrodes via innovative argan nutshell activated carbon synthesis |
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Autor/es: | El Ouahabi, Hajar | Elmouwahidi, Abdelhakim | Cano-Casanova, Laura | Lillo-Rodenas, Maria Angeles | Román-Martínez, M. Carmen | Pérez-Cadenas, Agustín Francisco | Bailón-García, Esther | Shaban, Mohamed | Al-Senani, Ghadah M. | Ouzzine, Mohammed | Khaddor, Mohamed |
Grupo/s de investigación o GITE: | Materiales Carbonosos y Medio Ambiente |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Supercapacitors | Argan nutshell | Activated carbons | Electrode materials | Durability |
Fecha de publicación: | 24-ene-2024 |
Editor: | Elsevier |
Cita bibliográfica: | Journal of Energy Storage. 2024, 82: 110598. https://doi.org/10.1016/j.est.2024.110598 |
Resumen: | In this work, a detailed comprehensive investigation explores the impact of processing methods and chemical activation parameters on the textural properties of a series of activated carbons (ACs) derived from Argan Nut Shell (ANS) residue using KOH. This study aims to develop and optimize high-quality ACs for use as solid-state supercapacitors with superior performance in a 1 M H2SO4 electrolyte. The two-step process (involving ANS carbonization followed by activation) is found to significantly enhance specific surface area and total pore volume compared to a one-step process, reaching values of 2334 m2·g−1 and 1.21 cm3·g−1 versus 1394 m2·g−1 and 0.83 cm3·g−1, respectively. The superior surface area and pore volume results are achieved at a KOH/char mass ratio of 4:1, carbonization temperature of 500 °C, and an activation temperature of 800 °C, reaching 3091 m2·g−1 and 1.52 m3·g−1, respectively. Evaluation of electrochemical properties in a two-electrode system with 1 M H2SO4 electrolyte demonstrates outstanding capacitance and maximum specific energy at a current density of 125 mA·g−1, reaching up to 416 F·g−1 and 14.5 Wh·kg−1 at a specific power of ~120 Wkg−1. This superior performance is attributed to the ACs' high surface area, well-developed microporosity, and favorable surface chemistry. Additionally, the ACs demonstrate exceptional cycling stability, as they retain 99 % of their specific capacitance even after undergoing 2500 charge and discharge cycles at a rate of 1 A·g−1. This work offers a novel strategy for reclaiming Argan Nutshell, offering a sustainable approach for electrode materials in solid-state supercapacitors. |
Patrocinador/es: | The authors acknowledge financial supports provided by the office of the Vice President of University of Alicante projects for Cooperation to Development 2019 and 2020. Authors from UGR-Carbon acknowledge MCIN/AEI/10.13039/501100011033/ and “ERDF A way of making Europe” by the project PID2021-127803OB-I00. The authors would like to extend their sincere appreciation to Princess Nourah bint Abdulrahman University Researchers Supporting Project number (PNURSP2024R67), Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia. A. Elmouwahidi acknowledges the support of the grant María Zambrano (RD 289/2021), funded by the European Union - Next Generation EU programme. Prof. Mohamed KHADDOR acknowledges the support of CNRST (Morocco). |
URI: | http://hdl.handle.net/10045/140463 |
ISSN: | 2352-152X (Print) | 2352-1538 (Online) |
DOI: | 10.1016/j.est.2024.110598 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2024 Elsevier Ltd. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1016/j.est.2024.110598 |
Aparece en las colecciones: | INV - MCMA - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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El-Ouahabi_etal_2024_JEnergyStorage_final.pdf | Versión final (acceso restringido) | 5 MB | Adobe PDF | Abrir Solicitar una copia |
El-Ouahabi_etal_2024_JEnergyStorage_revised.pdf | Embargo 24 meses (acceso abierto: 25 en. 2026) | 4,86 MB | Adobe PDF | Abrir Solicitar una copia |
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