Staff View: Enhancing capacitive performance of magnetite-reduced graphene oxide nanocomposites through magnetic field-assisted ion migration

Enhancing capacitive performance of magnetite-reduced graphene oxide nanocomposites through magnetic field-assisted ion migration

The transition towards renewable energy sources necessitates efficient energy storage systems to meet growing demands. Electrochemical capacitors, particularly electric double-layer capacitors (EDLCs), show promising performance due to their superior properties. However, the presence of resistance l...

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Main Authors:	Nur Alya Syakirah, Abdul Jalil, Aboelazm, Eslam A. A., Khe, Cheng Seong, Ali, Gomaa A. M., Chong, Kwok Feng, Lai, Chin Wei, You, Kok Yeow
Format:	Article
Language:	English
Published:	Public Library of Science 2024
Subjects:	Q Science (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/41355/1/Enhancing%20capacitive%20performance%20of%20magnetite-reduced%20graphene%20oxide.pdf http://umpir.ump.edu.my/id/eprint/41355/ https://doi.org/10.1371/journal.pone.0292737 https://doi.org/10.1371/journal.pone.0292737
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spelling	my.ump.umpir.413552024-05-23T03:54:43Z http://umpir.ump.edu.my/id/eprint/41355/ Enhancing capacitive performance of magnetite-reduced graphene oxide nanocomposites through magnetic field-assisted ion migration Nur Alya Syakirah, Abdul Jalil Aboelazm, Eslam A. A. Khe, Cheng Seong Ali, Gomaa A. M. Chong, Kwok Feng Lai, Chin Wei You, Kok Yeow Q Science (General) The transition towards renewable energy sources necessitates efficient energy storage systems to meet growing demands. Electrochemical capacitors, particularly electric double-layer capacitors (EDLCs), show promising performance due to their superior properties. However, the presence of resistance limits their performance. This study explores using an external magnetic field to mitigate ion transfer resistance and enhance capacitance in magnetite-reduced graphene oxide (M-rGO) nanocomposites. M-rGO nanocomposites with varying weight ratios of magnetite were synthesized and comprehensively characterized. Characterization highlighted the difference in certain parameters such as C/O ratio, the Id/Ig ratio, surface area and particle size that contribute towards alteration of M-rGO’s capacitive behaviour. Electrochemical studies demonstrated that applying a magnetic field increased specific capacitance by approximately 20% and reduced resistance by 33%. Notably, a maximum specific capacitance of 16.36 F/g (at a scan rate of 0.1 V/s) and 27.24 F/g (at a current density of 0.25 A/g) was achieved. These improvements were attributed to enhanced ion transportation and migration at the electrode/electrolyte interface, lowering overall resistance. However, it was also observed that the aforementioned parameters can also limit the M-rGO’s performance, resulting in saturated capacitive state despite a reduced resistance. The integration of magnetic fields enhances energy storage in nanocomposite systems, necessitating further investigation into underlying mechanisms and practical applications. Public Library of Science 2024-02 Article PeerReviewed pdf en cc_by_4 http://umpir.ump.edu.my/id/eprint/41355/1/Enhancing%20capacitive%20performance%20of%20magnetite-reduced%20graphene%20oxide.pdf Nur Alya Syakirah, Abdul Jalil and Aboelazm, Eslam A. A. and Khe, Cheng Seong and Ali, Gomaa A. M. and Chong, Kwok Feng and Lai, Chin Wei and You, Kok Yeow (2024) Enhancing capacitive performance of magnetite-reduced graphene oxide nanocomposites through magnetic field-assisted ion migration. PLoS ONE, 19 (2). pp. 1-19. ISSN 1932-6203. (Published) https://doi.org/10.1371/journal.pone.0292737 https://doi.org/10.1371/journal.pone.0292737
institution	Universiti Malaysia Pahang Al-Sultan Abdullah
building	UMPSA Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Pahang Al-Sultan Abdullah
content_source	UMPSA Institutional Repository
url_provider	http://umpir.ump.edu.my/
language	English
topic	Q Science (General)
spellingShingle	Q Science (General) Nur Alya Syakirah, Abdul Jalil Aboelazm, Eslam A. A. Khe, Cheng Seong Ali, Gomaa A. M. Chong, Kwok Feng Lai, Chin Wei You, Kok Yeow Enhancing capacitive performance of magnetite-reduced graphene oxide nanocomposites through magnetic field-assisted ion migration
description	The transition towards renewable energy sources necessitates efficient energy storage systems to meet growing demands. Electrochemical capacitors, particularly electric double-layer capacitors (EDLCs), show promising performance due to their superior properties. However, the presence of resistance limits their performance. This study explores using an external magnetic field to mitigate ion transfer resistance and enhance capacitance in magnetite-reduced graphene oxide (M-rGO) nanocomposites. M-rGO nanocomposites with varying weight ratios of magnetite were synthesized and comprehensively characterized. Characterization highlighted the difference in certain parameters such as C/O ratio, the Id/Ig ratio, surface area and particle size that contribute towards alteration of M-rGO’s capacitive behaviour. Electrochemical studies demonstrated that applying a magnetic field increased specific capacitance by approximately 20% and reduced resistance by 33%. Notably, a maximum specific capacitance of 16.36 F/g (at a scan rate of 0.1 V/s) and 27.24 F/g (at a current density of 0.25 A/g) was achieved. These improvements were attributed to enhanced ion transportation and migration at the electrode/electrolyte interface, lowering overall resistance. However, it was also observed that the aforementioned parameters can also limit the M-rGO’s performance, resulting in saturated capacitive state despite a reduced resistance. The integration of magnetic fields enhances energy storage in nanocomposite systems, necessitating further investigation into underlying mechanisms and practical applications.
format	Article
author	Nur Alya Syakirah, Abdul Jalil Aboelazm, Eslam A. A. Khe, Cheng Seong Ali, Gomaa A. M. Chong, Kwok Feng Lai, Chin Wei You, Kok Yeow
author_facet	Nur Alya Syakirah, Abdul Jalil Aboelazm, Eslam A. A. Khe, Cheng Seong Ali, Gomaa A. M. Chong, Kwok Feng Lai, Chin Wei You, Kok Yeow
author_sort	Nur Alya Syakirah, Abdul Jalil
title	Enhancing capacitive performance of magnetite-reduced graphene oxide nanocomposites through magnetic field-assisted ion migration
title_short	Enhancing capacitive performance of magnetite-reduced graphene oxide nanocomposites through magnetic field-assisted ion migration
title_full	Enhancing capacitive performance of magnetite-reduced graphene oxide nanocomposites through magnetic field-assisted ion migration
title_fullStr	Enhancing capacitive performance of magnetite-reduced graphene oxide nanocomposites through magnetic field-assisted ion migration
title_full_unstemmed	Enhancing capacitive performance of magnetite-reduced graphene oxide nanocomposites through magnetic field-assisted ion migration
title_sort	enhancing capacitive performance of magnetite-reduced graphene oxide nanocomposites through magnetic field-assisted ion migration
publisher	Public Library of Science
publishDate	2024
url	http://umpir.ump.edu.my/id/eprint/41355/1/Enhancing%20capacitive%20performance%20of%20magnetite-reduced%20graphene%20oxide.pdf http://umpir.ump.edu.my/id/eprint/41355/ https://doi.org/10.1371/journal.pone.0292737 https://doi.org/10.1371/journal.pone.0292737
_version_	1822924346441596928
score	13.23648

Enhancing capacitive performance of magnetite-reduced graphene oxide nanocomposites through magnetic field-assisted ion migration

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