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Aqueous dispersions of carbon black and its hybrid with carbon nanofibers
The aqueous dispersions of a special type of carbon black (CB) in 1 M lithium bis(trifluoromethanesulfonimide) electrolyte is mainly controlled by the affinity of the aqueous electrolyte towards the CB particles rather than the particle size. In spite of its small particle size (30 nm), this type of...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9086548/ https://www.ncbi.nlm.nih.gov/pubmed/35547476 http://dx.doi.org/10.1039/c8ra05446k |
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author | Youssry, Mohamed Kamand, Fadi Z. Magzoub, Musaab I. Nasser, Mustafa S. |
author_facet | Youssry, Mohamed Kamand, Fadi Z. Magzoub, Musaab I. Nasser, Mustafa S. |
author_sort | Youssry, Mohamed |
collection | PubMed |
description | The aqueous dispersions of a special type of carbon black (CB) in 1 M lithium bis(trifluoromethanesulfonimide) electrolyte is mainly controlled by the affinity of the aqueous electrolyte towards the CB particles rather than the particle size. In spite of its small particle size (30 nm), this type of CB forms a three-dimensional open network which is rheologically and electrically percolated at a relatively high threshold (2.0 wt%) with enhanced rheological and electrical properties. At this percolating threshold, replacing a trace amount of CB with equivalent carbon nanofibers (CNFs) produces hybrid dispersions with higher electrical conductivity and comparable rheological behavior to pure CB dispersions. This hybrid dispersion is dominated by a cooperatively supporting network, which is wired by the flexible filamentous nanofibers so that it is able to recover the conductivity loss under flow conditions due to flow-induced breaking up of the conductive pathways of CB and presumably sustain a higher load of active materials. This finding suggests hybrid dispersions as a promising precursor in the formulation of electrode suspensions for aqueous semi-solid redox flow cells. |
format | Online Article Text |
id | pubmed-9086548 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90865482022-05-10 Aqueous dispersions of carbon black and its hybrid with carbon nanofibers Youssry, Mohamed Kamand, Fadi Z. Magzoub, Musaab I. Nasser, Mustafa S. RSC Adv Chemistry The aqueous dispersions of a special type of carbon black (CB) in 1 M lithium bis(trifluoromethanesulfonimide) electrolyte is mainly controlled by the affinity of the aqueous electrolyte towards the CB particles rather than the particle size. In spite of its small particle size (30 nm), this type of CB forms a three-dimensional open network which is rheologically and electrically percolated at a relatively high threshold (2.0 wt%) with enhanced rheological and electrical properties. At this percolating threshold, replacing a trace amount of CB with equivalent carbon nanofibers (CNFs) produces hybrid dispersions with higher electrical conductivity and comparable rheological behavior to pure CB dispersions. This hybrid dispersion is dominated by a cooperatively supporting network, which is wired by the flexible filamentous nanofibers so that it is able to recover the conductivity loss under flow conditions due to flow-induced breaking up of the conductive pathways of CB and presumably sustain a higher load of active materials. This finding suggests hybrid dispersions as a promising precursor in the formulation of electrode suspensions for aqueous semi-solid redox flow cells. The Royal Society of Chemistry 2018-09-17 /pmc/articles/PMC9086548/ /pubmed/35547476 http://dx.doi.org/10.1039/c8ra05446k Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/ |
spellingShingle | Chemistry Youssry, Mohamed Kamand, Fadi Z. Magzoub, Musaab I. Nasser, Mustafa S. Aqueous dispersions of carbon black and its hybrid with carbon nanofibers |
title | Aqueous dispersions of carbon black and its hybrid with carbon nanofibers |
title_full | Aqueous dispersions of carbon black and its hybrid with carbon nanofibers |
title_fullStr | Aqueous dispersions of carbon black and its hybrid with carbon nanofibers |
title_full_unstemmed | Aqueous dispersions of carbon black and its hybrid with carbon nanofibers |
title_short | Aqueous dispersions of carbon black and its hybrid with carbon nanofibers |
title_sort | aqueous dispersions of carbon black and its hybrid with carbon nanofibers |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9086548/ https://www.ncbi.nlm.nih.gov/pubmed/35547476 http://dx.doi.org/10.1039/c8ra05446k |
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