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Permselectivity and Ionic Conductivity Study of Na(+) and Br(−) Ions in Graphene Oxide-Based Membranes for Redox Flow Batteries
Permselectivity of a membrane is central for the development of electrochemical energy storage devices with two redox couples, such as redox flow batteries (RFBs). In RFBs, Br(3)(−)/Br(−) couple is often used as a catholyte which can cross over to the anolyte, limiting the battery’s lifetime. Natura...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10456580/ https://www.ncbi.nlm.nih.gov/pubmed/37623756 http://dx.doi.org/10.3390/membranes13080695 |
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author | Flack, Raphael Aixalà-Perelló, Anna Pedico, Alessandro Saadi, Kobby Lamberti, Andrea Zitoun, David |
author_facet | Flack, Raphael Aixalà-Perelló, Anna Pedico, Alessandro Saadi, Kobby Lamberti, Andrea Zitoun, David |
author_sort | Flack, Raphael |
collection | PubMed |
description | Permselectivity of a membrane is central for the development of electrochemical energy storage devices with two redox couples, such as redox flow batteries (RFBs). In RFBs, Br(3)(−)/Br(−) couple is often used as a catholyte which can cross over to the anolyte, limiting the battery’s lifetime. Naturally, the development of permselective membranes is essential to the success of RFBs since state-of-the-art perfluorosulfonic acid (PFSA) is too costly. This study investigates membranes of graphene oxide (GO), polyvinylpyrrolidone (PVP), and imidazole (Im) as binder and linker, respectively. The GO membranes are compared to a standard PFSA membrane in terms of ionic conductivity (Na(+)) and permselectivity (exclusion of Br(−)). The ionic conduction is evaluated from electrochemical impedance spectroscopy and the permselectivity from two-compartment diffusion cells in a four-electrode system. Our findings suggest that the GO membranes reach conductivity and permselectivity comparable with standard PFSA membranes. |
format | Online Article Text |
id | pubmed-10456580 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-104565802023-08-26 Permselectivity and Ionic Conductivity Study of Na(+) and Br(−) Ions in Graphene Oxide-Based Membranes for Redox Flow Batteries Flack, Raphael Aixalà-Perelló, Anna Pedico, Alessandro Saadi, Kobby Lamberti, Andrea Zitoun, David Membranes (Basel) Article Permselectivity of a membrane is central for the development of electrochemical energy storage devices with two redox couples, such as redox flow batteries (RFBs). In RFBs, Br(3)(−)/Br(−) couple is often used as a catholyte which can cross over to the anolyte, limiting the battery’s lifetime. Naturally, the development of permselective membranes is essential to the success of RFBs since state-of-the-art perfluorosulfonic acid (PFSA) is too costly. This study investigates membranes of graphene oxide (GO), polyvinylpyrrolidone (PVP), and imidazole (Im) as binder and linker, respectively. The GO membranes are compared to a standard PFSA membrane in terms of ionic conductivity (Na(+)) and permselectivity (exclusion of Br(−)). The ionic conduction is evaluated from electrochemical impedance spectroscopy and the permselectivity from two-compartment diffusion cells in a four-electrode system. Our findings suggest that the GO membranes reach conductivity and permselectivity comparable with standard PFSA membranes. MDPI 2023-07-26 /pmc/articles/PMC10456580/ /pubmed/37623756 http://dx.doi.org/10.3390/membranes13080695 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 Flack, Raphael Aixalà-Perelló, Anna Pedico, Alessandro Saadi, Kobby Lamberti, Andrea Zitoun, David Permselectivity and Ionic Conductivity Study of Na(+) and Br(−) Ions in Graphene Oxide-Based Membranes for Redox Flow Batteries |
title | Permselectivity and Ionic Conductivity Study of Na(+) and Br(−) Ions in Graphene Oxide-Based Membranes for Redox Flow Batteries |
title_full | Permselectivity and Ionic Conductivity Study of Na(+) and Br(−) Ions in Graphene Oxide-Based Membranes for Redox Flow Batteries |
title_fullStr | Permselectivity and Ionic Conductivity Study of Na(+) and Br(−) Ions in Graphene Oxide-Based Membranes for Redox Flow Batteries |
title_full_unstemmed | Permselectivity and Ionic Conductivity Study of Na(+) and Br(−) Ions in Graphene Oxide-Based Membranes for Redox Flow Batteries |
title_short | Permselectivity and Ionic Conductivity Study of Na(+) and Br(−) Ions in Graphene Oxide-Based Membranes for Redox Flow Batteries |
title_sort | permselectivity and ionic conductivity study of na(+) and br(−) ions in graphene oxide-based membranes for redox flow batteries |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10456580/ https://www.ncbi.nlm.nih.gov/pubmed/37623756 http://dx.doi.org/10.3390/membranes13080695 |
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