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Hydrocarbon-Based Composite Membrane Using LCP-Nonwoven Fabrics for Durable Proton Exchange Membrane Water Electrolysis

A new hydrocarbon-based (HC) composite membrane was developed using liquid crystal polymer (LCP)-nonwoven fabrics for application in proton exchange membrane water electrolysis (PEMWE). A copolymer of sulfonated poly(arylene ether sulfone) with a sulfonation degree of 50 mol% (SPAES50) was utilized...

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Autores principales: Kang, Seok Hyeon, Jeong, Hwan Yeop, Yoon, Sang Jun, So, Soonyong, Choi, Jaewon, Kim, Tae-Ho, Yu, Duk Man
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10181224/
https://www.ncbi.nlm.nih.gov/pubmed/37177255
http://dx.doi.org/10.3390/polym15092109
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author Kang, Seok Hyeon
Jeong, Hwan Yeop
Yoon, Sang Jun
So, Soonyong
Choi, Jaewon
Kim, Tae-Ho
Yu, Duk Man
author_facet Kang, Seok Hyeon
Jeong, Hwan Yeop
Yoon, Sang Jun
So, Soonyong
Choi, Jaewon
Kim, Tae-Ho
Yu, Duk Man
author_sort Kang, Seok Hyeon
collection PubMed
description A new hydrocarbon-based (HC) composite membrane was developed using liquid crystal polymer (LCP)-nonwoven fabrics for application in proton exchange membrane water electrolysis (PEMWE). A copolymer of sulfonated poly(arylene ether sulfone) with a sulfonation degree of 50 mol% (SPAES50) was utilized as an ionomer for the HC membranes and impregnated into the LCP-nonwoven fabrics without any surface treatment of the LCP. The physical interlocking structure between the SPAES50 and LCP-nonwoven fabrics was investigated, validating the outstanding mechanical properties and dimensional stability of the composite membrane in comparison to the pristine membrane. In addition, the through-plane proton conductivity of the composite membrane at 80 °C was only 15% lower than that of the pristine membrane because of the defect-free impregnation state, minimizing the decrease in the proton conductivity caused by the non-proton conductive LCP. During the electrochemical evaluation, the superior cell performance of the composite membrane was evident, with a current density of 5.41 A/cm(2) at 1.9 V, compared to 4.65 A/cm(2) for the pristine membrane, which can be attributed to the smaller membrane resistance of the composite membrane. From the results of the degradation rates, the prepared composite membrane also showed enhanced cell efficiency and durability during the PEMWE operations.
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spelling pubmed-101812242023-05-13 Hydrocarbon-Based Composite Membrane Using LCP-Nonwoven Fabrics for Durable Proton Exchange Membrane Water Electrolysis Kang, Seok Hyeon Jeong, Hwan Yeop Yoon, Sang Jun So, Soonyong Choi, Jaewon Kim, Tae-Ho Yu, Duk Man Polymers (Basel) Article A new hydrocarbon-based (HC) composite membrane was developed using liquid crystal polymer (LCP)-nonwoven fabrics for application in proton exchange membrane water electrolysis (PEMWE). A copolymer of sulfonated poly(arylene ether sulfone) with a sulfonation degree of 50 mol% (SPAES50) was utilized as an ionomer for the HC membranes and impregnated into the LCP-nonwoven fabrics without any surface treatment of the LCP. The physical interlocking structure between the SPAES50 and LCP-nonwoven fabrics was investigated, validating the outstanding mechanical properties and dimensional stability of the composite membrane in comparison to the pristine membrane. In addition, the through-plane proton conductivity of the composite membrane at 80 °C was only 15% lower than that of the pristine membrane because of the defect-free impregnation state, minimizing the decrease in the proton conductivity caused by the non-proton conductive LCP. During the electrochemical evaluation, the superior cell performance of the composite membrane was evident, with a current density of 5.41 A/cm(2) at 1.9 V, compared to 4.65 A/cm(2) for the pristine membrane, which can be attributed to the smaller membrane resistance of the composite membrane. From the results of the degradation rates, the prepared composite membrane also showed enhanced cell efficiency and durability during the PEMWE operations. MDPI 2023-04-28 /pmc/articles/PMC10181224/ /pubmed/37177255 http://dx.doi.org/10.3390/polym15092109 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kang, Seok Hyeon
Jeong, Hwan Yeop
Yoon, Sang Jun
So, Soonyong
Choi, Jaewon
Kim, Tae-Ho
Yu, Duk Man
Hydrocarbon-Based Composite Membrane Using LCP-Nonwoven Fabrics for Durable Proton Exchange Membrane Water Electrolysis
title Hydrocarbon-Based Composite Membrane Using LCP-Nonwoven Fabrics for Durable Proton Exchange Membrane Water Electrolysis
title_full Hydrocarbon-Based Composite Membrane Using LCP-Nonwoven Fabrics for Durable Proton Exchange Membrane Water Electrolysis
title_fullStr Hydrocarbon-Based Composite Membrane Using LCP-Nonwoven Fabrics for Durable Proton Exchange Membrane Water Electrolysis
title_full_unstemmed Hydrocarbon-Based Composite Membrane Using LCP-Nonwoven Fabrics for Durable Proton Exchange Membrane Water Electrolysis
title_short Hydrocarbon-Based Composite Membrane Using LCP-Nonwoven Fabrics for Durable Proton Exchange Membrane Water Electrolysis
title_sort hydrocarbon-based composite membrane using lcp-nonwoven fabrics for durable proton exchange membrane water electrolysis
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10181224/
https://www.ncbi.nlm.nih.gov/pubmed/37177255
http://dx.doi.org/10.3390/polym15092109
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