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Ionomer-free and recyclable porous-transport electrode for high-performing proton-exchange-membrane water electrolysis
Clean hydrogen production requires large-scale deployment of water-electrolysis technologies, particularly proton-exchange-membrane water electrolyzers (PEMWEs). However, as iridium-based electrocatalysts remain the only practical option for PEMWEs, their low abundance will become a bottleneck for a...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10390546/ https://www.ncbi.nlm.nih.gov/pubmed/37524721 http://dx.doi.org/10.1038/s41467-023-40375-x |
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author | Lee, Jason K. Anderson, Grace Tricker, Andrew W. Babbe, Finn Madan, Arya Cullen, David A. Arregui-Mena, José’ D. Danilovic, Nemanja Mukundan, Rangachary Weber, Adam Z. Peng, Xiong |
author_facet | Lee, Jason K. Anderson, Grace Tricker, Andrew W. Babbe, Finn Madan, Arya Cullen, David A. Arregui-Mena, José’ D. Danilovic, Nemanja Mukundan, Rangachary Weber, Adam Z. Peng, Xiong |
author_sort | Lee, Jason K. |
collection | PubMed |
description | Clean hydrogen production requires large-scale deployment of water-electrolysis technologies, particularly proton-exchange-membrane water electrolyzers (PEMWEs). However, as iridium-based electrocatalysts remain the only practical option for PEMWEs, their low abundance will become a bottleneck for a sustainable hydrogen economy. Herein, we propose high-performing and durable ionomer-free porous transport electrodes (PTEs) with facile recycling features enabling Ir thrifting and reclamation. The ionomer-free porous transport electrodes offer a practical pathway to investigate the role of ionomer in the catalyst layer and, from microelectrode measurements, point to an ionomer poisoning effect for the oxygen evolution reaction. The ionomer-free porous transport electrodes demonstrate a voltage reduction of > 600 mV compared to conventional ionomer-coated porous transport electrodes at 1.8 A cm(−2) and <0.1 mg(Ir) cm(−2), and a voltage degradation of 29 mV at average rate of 0.58 mV per 1000-cycles after 50k cycles of accelerated-stress tests at 4 A cm(−2). Moreover, the ionomer-free feature enables facile recycling of multiple components of PEMWEs, which is critical to a circular clean hydrogen economy. |
format | Online Article Text |
id | pubmed-10390546 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-103905462023-08-02 Ionomer-free and recyclable porous-transport electrode for high-performing proton-exchange-membrane water electrolysis Lee, Jason K. Anderson, Grace Tricker, Andrew W. Babbe, Finn Madan, Arya Cullen, David A. Arregui-Mena, José’ D. Danilovic, Nemanja Mukundan, Rangachary Weber, Adam Z. Peng, Xiong Nat Commun Article Clean hydrogen production requires large-scale deployment of water-electrolysis technologies, particularly proton-exchange-membrane water electrolyzers (PEMWEs). However, as iridium-based electrocatalysts remain the only practical option for PEMWEs, their low abundance will become a bottleneck for a sustainable hydrogen economy. Herein, we propose high-performing and durable ionomer-free porous transport electrodes (PTEs) with facile recycling features enabling Ir thrifting and reclamation. The ionomer-free porous transport electrodes offer a practical pathway to investigate the role of ionomer in the catalyst layer and, from microelectrode measurements, point to an ionomer poisoning effect for the oxygen evolution reaction. The ionomer-free porous transport electrodes demonstrate a voltage reduction of > 600 mV compared to conventional ionomer-coated porous transport electrodes at 1.8 A cm(−2) and <0.1 mg(Ir) cm(−2), and a voltage degradation of 29 mV at average rate of 0.58 mV per 1000-cycles after 50k cycles of accelerated-stress tests at 4 A cm(−2). Moreover, the ionomer-free feature enables facile recycling of multiple components of PEMWEs, which is critical to a circular clean hydrogen economy. Nature Publishing Group UK 2023-07-31 /pmc/articles/PMC10390546/ /pubmed/37524721 http://dx.doi.org/10.1038/s41467-023-40375-x Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Lee, Jason K. Anderson, Grace Tricker, Andrew W. Babbe, Finn Madan, Arya Cullen, David A. Arregui-Mena, José’ D. Danilovic, Nemanja Mukundan, Rangachary Weber, Adam Z. Peng, Xiong Ionomer-free and recyclable porous-transport electrode for high-performing proton-exchange-membrane water electrolysis |
title | Ionomer-free and recyclable porous-transport electrode for high-performing proton-exchange-membrane water electrolysis |
title_full | Ionomer-free and recyclable porous-transport electrode for high-performing proton-exchange-membrane water electrolysis |
title_fullStr | Ionomer-free and recyclable porous-transport electrode for high-performing proton-exchange-membrane water electrolysis |
title_full_unstemmed | Ionomer-free and recyclable porous-transport electrode for high-performing proton-exchange-membrane water electrolysis |
title_short | Ionomer-free and recyclable porous-transport electrode for high-performing proton-exchange-membrane water electrolysis |
title_sort | ionomer-free and recyclable porous-transport electrode for high-performing proton-exchange-membrane water electrolysis |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10390546/ https://www.ncbi.nlm.nih.gov/pubmed/37524721 http://dx.doi.org/10.1038/s41467-023-40375-x |
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