Carbon Materials Prepared from Invading Pelagic Sargassum for Supercapacitors’ Electrodes
Since 2011, substantial amounts of pelagic Sargassum algae have washed up along the Caribbean beaches and the Gulf of Mexico, leading to negative impacts on the economy and the environment of those areas. Hence, it is now crucial to develop strategies to mitigate this problem while valorizing such i...
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MDPI AG
2023-08-01
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author | Sandra Roche Christelle Yacou Corine Jean Marius Ronald Ranguin Marckens Francoeur Pierre-Louis Taberna Nady Passe-Coutrin Sarra Gaspard |
author_facet | Sandra Roche Christelle Yacou Corine Jean Marius Ronald Ranguin Marckens Francoeur Pierre-Louis Taberna Nady Passe-Coutrin Sarra Gaspard |
author_sort | Sandra Roche |
collection | DOAJ |
description | Since 2011, substantial amounts of pelagic Sargassum algae have washed up along the Caribbean beaches and the Gulf of Mexico, leading to negative impacts on the economy and the environment of those areas. Hence, it is now crucial to develop strategies to mitigate this problem while valorizing such invasive biomass. This work deals with the successful exploitation of this pelagic Sargassum seaweed for the fabrication of carbon materials that can be used as electrodes for supercapacitors. Pelagic Sargassum precursors were simply pyrolyzed at temperatures varying from 600 to 900 °C. The resultant carbonaceous materials were then extensively characterized using different techniques, such as nitrogen adsorption for textural characterization, as well as X-ray photoelectron (XPS), Fourier transform infrared spectroscopies (FT-IR) and scanning electron microscopy (SEM), to understand their structures and functionalities. The electrochemical properties of the carbon materials were also tested for their performance as supercapacitors using cyclic voltammetry (CV), the galvanostatic method and electrochemical impedance spectroscopy analyses (EIS). We managed to have a large specific surface, i.e., 1664 m<sup>2</sup> g<sup>−1</sup> for biochar prepared at 800 °C (CS800). Eventually, CS800 turned out to exhibit the highest capacitance (96 F g<sup>−1</sup>) over the four samples, along with the highest specific surface (1664 m<sup>2</sup> g<sup>−1</sup>), with specific resistance of about 0.07 Ω g <sup>−1</sup>. |
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spelling | doaj.art-9760ee8111e94075b7f98276258f5b052023-11-18T23:20:07ZengMDPI AGMolecules1420-30492023-08-012815588210.3390/molecules28155882Carbon Materials Prepared from Invading Pelagic Sargassum for Supercapacitors’ ElectrodesSandra Roche0Christelle Yacou1Corine Jean Marius2Ronald Ranguin3Marckens Francoeur4Pierre-Louis Taberna5Nady Passe-Coutrin6Sarra Gaspard7Laboratory «Connaissance et Valorisation: Chimie des Matériaux, Environnement, Énergie» (COVACHIM–M2E–EA 3592), Faculté des Sciences Exactes et Naturelles, Université des Antilles, B.P. 250, CEDEX, 97157 Pointe-à-Pitre, FranceLaboratory «Connaissance et Valorisation: Chimie des Matériaux, Environnement, Énergie» (COVACHIM–M2E–EA 3592), Faculté des Sciences Exactes et Naturelles, Université des Antilles, B.P. 250, CEDEX, 97157 Pointe-à-Pitre, FranceLaboratory «Connaissance et Valorisation: Chimie des Matériaux, Environnement, Énergie» (COVACHIM–M2E–EA 3592), Faculté des Sciences Exactes et Naturelles, Université des Antilles, B.P. 250, CEDEX, 97157 Pointe-à-Pitre, FranceLaboratory «Connaissance et Valorisation: Chimie des Matériaux, Environnement, Énergie» (COVACHIM–M2E–EA 3592), Faculté des Sciences Exactes et Naturelles, Université des Antilles, B.P. 250, CEDEX, 97157 Pointe-à-Pitre, FranceLaboratory «Connaissance et Valorisation: Chimie des Matériaux, Environnement, Énergie» (COVACHIM–M2E–EA 3592), Faculté des Sciences Exactes et Naturelles, Université des Antilles, B.P. 250, CEDEX, 97157 Pointe-à-Pitre, FranceCIRIMAT, UMR CNRS 5085, Université Paul Sabatier Toulouse III, 118 Route de Narbonne, 31062 Toulouse, FranceLaboratory «Connaissance et Valorisation: Chimie des Matériaux, Environnement, Énergie» (COVACHIM–M2E–EA 3592), Faculté des Sciences Exactes et Naturelles, Université des Antilles, B.P. 250, CEDEX, 97157 Pointe-à-Pitre, FranceLaboratory «Connaissance et Valorisation: Chimie des Matériaux, Environnement, Énergie» (COVACHIM–M2E–EA 3592), Faculté des Sciences Exactes et Naturelles, Université des Antilles, B.P. 250, CEDEX, 97157 Pointe-à-Pitre, FranceSince 2011, substantial amounts of pelagic Sargassum algae have washed up along the Caribbean beaches and the Gulf of Mexico, leading to negative impacts on the economy and the environment of those areas. Hence, it is now crucial to develop strategies to mitigate this problem while valorizing such invasive biomass. This work deals with the successful exploitation of this pelagic Sargassum seaweed for the fabrication of carbon materials that can be used as electrodes for supercapacitors. Pelagic Sargassum precursors were simply pyrolyzed at temperatures varying from 600 to 900 °C. The resultant carbonaceous materials were then extensively characterized using different techniques, such as nitrogen adsorption for textural characterization, as well as X-ray photoelectron (XPS), Fourier transform infrared spectroscopies (FT-IR) and scanning electron microscopy (SEM), to understand their structures and functionalities. The electrochemical properties of the carbon materials were also tested for their performance as supercapacitors using cyclic voltammetry (CV), the galvanostatic method and electrochemical impedance spectroscopy analyses (EIS). We managed to have a large specific surface, i.e., 1664 m<sup>2</sup> g<sup>−1</sup> for biochar prepared at 800 °C (CS800). Eventually, CS800 turned out to exhibit the highest capacitance (96 F g<sup>−1</sup>) over the four samples, along with the highest specific surface (1664 m<sup>2</sup> g<sup>−1</sup>), with specific resistance of about 0.07 Ω g <sup>−1</sup>.https://www.mdpi.com/1420-3049/28/15/5882activated carbonsargassumsupercapacitorenergy storagebiomass |
spellingShingle | Sandra Roche Christelle Yacou Corine Jean Marius Ronald Ranguin Marckens Francoeur Pierre-Louis Taberna Nady Passe-Coutrin Sarra Gaspard Carbon Materials Prepared from Invading Pelagic Sargassum for Supercapacitors’ Electrodes Molecules activated carbon sargassum supercapacitor energy storage biomass |
title | Carbon Materials Prepared from Invading Pelagic Sargassum for Supercapacitors’ Electrodes |
title_full | Carbon Materials Prepared from Invading Pelagic Sargassum for Supercapacitors’ Electrodes |
title_fullStr | Carbon Materials Prepared from Invading Pelagic Sargassum for Supercapacitors’ Electrodes |
title_full_unstemmed | Carbon Materials Prepared from Invading Pelagic Sargassum for Supercapacitors’ Electrodes |
title_short | Carbon Materials Prepared from Invading Pelagic Sargassum for Supercapacitors’ Electrodes |
title_sort | carbon materials prepared from invading pelagic sargassum for supercapacitors electrodes |
topic | activated carbon sargassum supercapacitor energy storage biomass |
url | https://www.mdpi.com/1420-3049/28/15/5882 |
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