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Electron beam-based fabrication of crosslinked hydrophilic carbon electrodes and their application for capacitive deionization

In this research, we demonstrated that a crosslinked hydrophilic carbon electrode with better electrochemical performance than hydrophobic counterparts can easily be produced using room-temperature, quick electron-beam irradiation with a hydrophilic methacryloyl-substituted polyvinyl alcohol (SPVA)...

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Autores principales: Kim, Hyo-Sub, Sohn, Joon-Yong, Hwang, In-Tae, Shin, Junhwa, Jung, Chan-Hee, Son, Won Keun, Kang, Kyung Suk
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9062162/
https://www.ncbi.nlm.nih.gov/pubmed/35520723
http://dx.doi.org/10.1039/c8ra10527h
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author Kim, Hyo-Sub
Sohn, Joon-Yong
Hwang, In-Tae
Shin, Junhwa
Jung, Chan-Hee
Son, Won Keun
Kang, Kyung Suk
author_facet Kim, Hyo-Sub
Sohn, Joon-Yong
Hwang, In-Tae
Shin, Junhwa
Jung, Chan-Hee
Son, Won Keun
Kang, Kyung Suk
author_sort Kim, Hyo-Sub
collection PubMed
description In this research, we demonstrated that a crosslinked hydrophilic carbon electrode with better electrochemical performance than hydrophobic counterparts can easily be produced using room-temperature, quick electron-beam irradiation with a hydrophilic methacryloyl-substituted polyvinyl alcohol (SPVA) binder. The SPVA binder was effectively synthesized by trans-esterification of PVA with glycidyl methacrylate. The hydrophilic carbon electrode cast on a graphite sheet from a slurry of activated carbon (AC) and SPVA was irradiated with an electron beam to form a crosslinked structure. The analytical results in terms of the morphology, solvent resistance, chemical composition, and contact angle revealed that the carbon electrode was completely crosslinked by electron-beam irradiation even at the dose of 100 kGy (irradiation time = 180 s). The new electrode exhibited superior water-wettability due to the hydrophilic functionality of SPVA. Furthermore, the hydrophilic carbon electrode with an AC : SPVA composition of 90 : 10 and an absorbed dose of 200 kGy, exhibited a specific capacitance of 127 F g(−1) (67% higher than the hydrophobic poly(vinylidene fluoride) (PVDF)-based counterpart with the same composition). The specific capacitance was further improved to 160 F g(−1) with an increase in the AC content. The hydrophilic carbon electrode exhibited noticeably better desalination efficiency than the hydrophobic PVDF-based counterpart.
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spelling pubmed-90621622022-05-04 Electron beam-based fabrication of crosslinked hydrophilic carbon electrodes and their application for capacitive deionization Kim, Hyo-Sub Sohn, Joon-Yong Hwang, In-Tae Shin, Junhwa Jung, Chan-Hee Son, Won Keun Kang, Kyung Suk RSC Adv Chemistry In this research, we demonstrated that a crosslinked hydrophilic carbon electrode with better electrochemical performance than hydrophobic counterparts can easily be produced using room-temperature, quick electron-beam irradiation with a hydrophilic methacryloyl-substituted polyvinyl alcohol (SPVA) binder. The SPVA binder was effectively synthesized by trans-esterification of PVA with glycidyl methacrylate. The hydrophilic carbon electrode cast on a graphite sheet from a slurry of activated carbon (AC) and SPVA was irradiated with an electron beam to form a crosslinked structure. The analytical results in terms of the morphology, solvent resistance, chemical composition, and contact angle revealed that the carbon electrode was completely crosslinked by electron-beam irradiation even at the dose of 100 kGy (irradiation time = 180 s). The new electrode exhibited superior water-wettability due to the hydrophilic functionality of SPVA. Furthermore, the hydrophilic carbon electrode with an AC : SPVA composition of 90 : 10 and an absorbed dose of 200 kGy, exhibited a specific capacitance of 127 F g(−1) (67% higher than the hydrophobic poly(vinylidene fluoride) (PVDF)-based counterpart with the same composition). The specific capacitance was further improved to 160 F g(−1) with an increase in the AC content. The hydrophilic carbon electrode exhibited noticeably better desalination efficiency than the hydrophobic PVDF-based counterpart. The Royal Society of Chemistry 2019-03-26 /pmc/articles/PMC9062162/ /pubmed/35520723 http://dx.doi.org/10.1039/c8ra10527h Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Kim, Hyo-Sub
Sohn, Joon-Yong
Hwang, In-Tae
Shin, Junhwa
Jung, Chan-Hee
Son, Won Keun
Kang, Kyung Suk
Electron beam-based fabrication of crosslinked hydrophilic carbon electrodes and their application for capacitive deionization
title Electron beam-based fabrication of crosslinked hydrophilic carbon electrodes and their application for capacitive deionization
title_full Electron beam-based fabrication of crosslinked hydrophilic carbon electrodes and their application for capacitive deionization
title_fullStr Electron beam-based fabrication of crosslinked hydrophilic carbon electrodes and their application for capacitive deionization
title_full_unstemmed Electron beam-based fabrication of crosslinked hydrophilic carbon electrodes and their application for capacitive deionization
title_short Electron beam-based fabrication of crosslinked hydrophilic carbon electrodes and their application for capacitive deionization
title_sort electron beam-based fabrication of crosslinked hydrophilic carbon electrodes and their application for capacitive deionization
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9062162/
https://www.ncbi.nlm.nih.gov/pubmed/35520723
http://dx.doi.org/10.1039/c8ra10527h
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