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Polystyrene-Based Hydroxide-Ion-Conducting Ionomer: Binder Characteristics and Performance in Anion-Exchange Membrane Fuel Cells
Polystyrene-based polymers with variable molecular weights are prepared by radical polymerization of styrene. Polystyrene is grafted with bromo-alkyl chains of different lengths through Friedel–Crafts acylation and quaternized to afford a series of hydroxide-ion-conducting ionomers for the catalyst...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7956690/ https://www.ncbi.nlm.nih.gov/pubmed/33668920 http://dx.doi.org/10.3390/polym13050690 |
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author | Chae, Ji Eon Lee, So Young Yoo, Sung Jong Kim, Jin Young Jang, Jong Hyun Park, Hee-Young Park, Hyun Seo Seo, Bora Henkensmeier, Dirk Song, Kwang Ho Kim, Hyoung-Juhn |
author_facet | Chae, Ji Eon Lee, So Young Yoo, Sung Jong Kim, Jin Young Jang, Jong Hyun Park, Hee-Young Park, Hyun Seo Seo, Bora Henkensmeier, Dirk Song, Kwang Ho Kim, Hyoung-Juhn |
author_sort | Chae, Ji Eon |
collection | PubMed |
description | Polystyrene-based polymers with variable molecular weights are prepared by radical polymerization of styrene. Polystyrene is grafted with bromo-alkyl chains of different lengths through Friedel–Crafts acylation and quaternized to afford a series of hydroxide-ion-conducting ionomers for the catalyst binder for the membrane electrode assembly in anion-exchange membrane fuel cells (AEMFCs). Structural analyses reveal that the molecular weight of the polystyrene backbone ranges from 10,000 to 63,000 g mol(−1), while the ion exchange capacity of quaternary-ammonium-group-bearing ionomers ranges from 1.44 to 1.74 mmol g(−1). The performance of AEMFCs constructed using the prepared electrode ionomers is affected by several ionomer properties, and a maximal power density of 407 mW cm(−2) and a durability exceeding that of a reference cell with a commercially available ionomer are achieved under optimal conditions. Thus, the developed approach is concluded to be well suited for the fabrication of next-generation electrode ionomers for high-performance AEMFCs. |
format | Online Article Text |
id | pubmed-7956690 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-79566902021-03-16 Polystyrene-Based Hydroxide-Ion-Conducting Ionomer: Binder Characteristics and Performance in Anion-Exchange Membrane Fuel Cells Chae, Ji Eon Lee, So Young Yoo, Sung Jong Kim, Jin Young Jang, Jong Hyun Park, Hee-Young Park, Hyun Seo Seo, Bora Henkensmeier, Dirk Song, Kwang Ho Kim, Hyoung-Juhn Polymers (Basel) Article Polystyrene-based polymers with variable molecular weights are prepared by radical polymerization of styrene. Polystyrene is grafted with bromo-alkyl chains of different lengths through Friedel–Crafts acylation and quaternized to afford a series of hydroxide-ion-conducting ionomers for the catalyst binder for the membrane electrode assembly in anion-exchange membrane fuel cells (AEMFCs). Structural analyses reveal that the molecular weight of the polystyrene backbone ranges from 10,000 to 63,000 g mol(−1), while the ion exchange capacity of quaternary-ammonium-group-bearing ionomers ranges from 1.44 to 1.74 mmol g(−1). The performance of AEMFCs constructed using the prepared electrode ionomers is affected by several ionomer properties, and a maximal power density of 407 mW cm(−2) and a durability exceeding that of a reference cell with a commercially available ionomer are achieved under optimal conditions. Thus, the developed approach is concluded to be well suited for the fabrication of next-generation electrode ionomers for high-performance AEMFCs. MDPI 2021-02-25 /pmc/articles/PMC7956690/ /pubmed/33668920 http://dx.doi.org/10.3390/polym13050690 Text en © 2021 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Chae, Ji Eon Lee, So Young Yoo, Sung Jong Kim, Jin Young Jang, Jong Hyun Park, Hee-Young Park, Hyun Seo Seo, Bora Henkensmeier, Dirk Song, Kwang Ho Kim, Hyoung-Juhn Polystyrene-Based Hydroxide-Ion-Conducting Ionomer: Binder Characteristics and Performance in Anion-Exchange Membrane Fuel Cells |
title | Polystyrene-Based Hydroxide-Ion-Conducting Ionomer: Binder Characteristics and Performance in Anion-Exchange Membrane Fuel Cells |
title_full | Polystyrene-Based Hydroxide-Ion-Conducting Ionomer: Binder Characteristics and Performance in Anion-Exchange Membrane Fuel Cells |
title_fullStr | Polystyrene-Based Hydroxide-Ion-Conducting Ionomer: Binder Characteristics and Performance in Anion-Exchange Membrane Fuel Cells |
title_full_unstemmed | Polystyrene-Based Hydroxide-Ion-Conducting Ionomer: Binder Characteristics and Performance in Anion-Exchange Membrane Fuel Cells |
title_short | Polystyrene-Based Hydroxide-Ion-Conducting Ionomer: Binder Characteristics and Performance in Anion-Exchange Membrane Fuel Cells |
title_sort | polystyrene-based hydroxide-ion-conducting ionomer: binder characteristics and performance in anion-exchange membrane fuel cells |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7956690/ https://www.ncbi.nlm.nih.gov/pubmed/33668920 http://dx.doi.org/10.3390/polym13050690 |
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