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Fabrication of Asymmetric Supercapacitors (AC@GQDs//AC) with High Electrochemical Performance Utilizing Activated Carbon and Graphene Quantum Dots

[Image: see text] Sugar cane bagasse stands as a prevalent and abundant form of solid agricultural waste, making it a prime candidate for innovative utilization. Harnessing its potential, we embarked on a groundbreaking endeavor to evaluate the sustainability of a molasses-based hydrothermal process...

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Autores principales: AlSalem, Huda S., Katubi, Khadijah Mohammed Saleh, Binkadem, Mona Saad, Al-Goul, Soha Talal, Wahba, Ahmed M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10620880/
https://www.ncbi.nlm.nih.gov/pubmed/37929126
http://dx.doi.org/10.1021/acsomega.3c05882
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author AlSalem, Huda S.
Katubi, Khadijah Mohammed Saleh
Binkadem, Mona Saad
Al-Goul, Soha Talal
Wahba, Ahmed M.
author_facet AlSalem, Huda S.
Katubi, Khadijah Mohammed Saleh
Binkadem, Mona Saad
Al-Goul, Soha Talal
Wahba, Ahmed M.
author_sort AlSalem, Huda S.
collection PubMed
description [Image: see text] Sugar cane bagasse stands as a prevalent and abundant form of solid agricultural waste, making it a prime candidate for innovative utilization. Harnessing its potential, we embarked on a groundbreaking endeavor to evaluate the sustainability of a molasses-based hydrothermal process to produce graphene quantum dots (GQDs). This pioneering initiative promises remarkable environmental benefits and holds immense economic potential. Embedding crystalline GQDs in activated carbon (AC) boost electrochemical efficiency by enhancing charge-transfer and ion migration kinetics. Optical, structural, and morphological evaluations were used to confirm the formation of GQDs. Transmission electron microscopy (TEM) investigation showed the size, shape, and fact that GQDs were monodispersed, and X-ray diffraction and Fourier transform infrared determined the structure of GQDs. The electrodes with negative (AC) and positive (AC@GQDs) polarity demonstrate a considerable specific capacitance of 220 and 265 F g(–1), respectively, when measured at 0.5 A g(–1). Additionally, these electrodes exhibit high-rate capabilities of 165 and 230 F g(–1) when measured at 5 A g(–1), as determined by galvanostatic charge–discharge techniques. The supercapacitor device comprising asymmetric AC//AC@GQDs exhibits a specific capacitance of 118 F g(–1). Furthermore, the asymmetric device exhibits exceptional cycling behavior, with an impressive 92% capacitance retention even after undergoing 10,000 cycles. This remarkable performance underscores the immense potential of both the negative and positive electrodes for real-world supercapacitor applications. Such findings pave the way for promising advancements in the field and offer exciting prospects for practical utilization.
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spelling pubmed-106208802023-11-03 Fabrication of Asymmetric Supercapacitors (AC@GQDs//AC) with High Electrochemical Performance Utilizing Activated Carbon and Graphene Quantum Dots AlSalem, Huda S. Katubi, Khadijah Mohammed Saleh Binkadem, Mona Saad Al-Goul, Soha Talal Wahba, Ahmed M. ACS Omega [Image: see text] Sugar cane bagasse stands as a prevalent and abundant form of solid agricultural waste, making it a prime candidate for innovative utilization. Harnessing its potential, we embarked on a groundbreaking endeavor to evaluate the sustainability of a molasses-based hydrothermal process to produce graphene quantum dots (GQDs). This pioneering initiative promises remarkable environmental benefits and holds immense economic potential. Embedding crystalline GQDs in activated carbon (AC) boost electrochemical efficiency by enhancing charge-transfer and ion migration kinetics. Optical, structural, and morphological evaluations were used to confirm the formation of GQDs. Transmission electron microscopy (TEM) investigation showed the size, shape, and fact that GQDs were monodispersed, and X-ray diffraction and Fourier transform infrared determined the structure of GQDs. The electrodes with negative (AC) and positive (AC@GQDs) polarity demonstrate a considerable specific capacitance of 220 and 265 F g(–1), respectively, when measured at 0.5 A g(–1). Additionally, these electrodes exhibit high-rate capabilities of 165 and 230 F g(–1) when measured at 5 A g(–1), as determined by galvanostatic charge–discharge techniques. The supercapacitor device comprising asymmetric AC//AC@GQDs exhibits a specific capacitance of 118 F g(–1). Furthermore, the asymmetric device exhibits exceptional cycling behavior, with an impressive 92% capacitance retention even after undergoing 10,000 cycles. This remarkable performance underscores the immense potential of both the negative and positive electrodes for real-world supercapacitor applications. Such findings pave the way for promising advancements in the field and offer exciting prospects for practical utilization. American Chemical Society 2023-10-18 /pmc/articles/PMC10620880/ /pubmed/37929126 http://dx.doi.org/10.1021/acsomega.3c05882 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle AlSalem, Huda S.
Katubi, Khadijah Mohammed Saleh
Binkadem, Mona Saad
Al-Goul, Soha Talal
Wahba, Ahmed M.
Fabrication of Asymmetric Supercapacitors (AC@GQDs//AC) with High Electrochemical Performance Utilizing Activated Carbon and Graphene Quantum Dots
title Fabrication of Asymmetric Supercapacitors (AC@GQDs//AC) with High Electrochemical Performance Utilizing Activated Carbon and Graphene Quantum Dots
title_full Fabrication of Asymmetric Supercapacitors (AC@GQDs//AC) with High Electrochemical Performance Utilizing Activated Carbon and Graphene Quantum Dots
title_fullStr Fabrication of Asymmetric Supercapacitors (AC@GQDs//AC) with High Electrochemical Performance Utilizing Activated Carbon and Graphene Quantum Dots
title_full_unstemmed Fabrication of Asymmetric Supercapacitors (AC@GQDs//AC) with High Electrochemical Performance Utilizing Activated Carbon and Graphene Quantum Dots
title_short Fabrication of Asymmetric Supercapacitors (AC@GQDs//AC) with High Electrochemical Performance Utilizing Activated Carbon and Graphene Quantum Dots
title_sort fabrication of asymmetric supercapacitors (ac@gqds//ac) with high electrochemical performance utilizing activated carbon and graphene quantum dots
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10620880/
https://www.ncbi.nlm.nih.gov/pubmed/37929126
http://dx.doi.org/10.1021/acsomega.3c05882
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