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Enhanced Performance of Zn/Br Flow Battery Using N-Methyl-N-Propylmorpholinium Bromide as Complexing Agent

Redox flow batteries (RFB) are one of the most interesting technologies in the field of energy storage, since they allow the decoupling of power and capacity. Zinc–bromine flow batteries (ZBFB) are a type of hybrid RFB, as the capacity depends on the effective area of the negative electrode (anode),...

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Autores principales: Jiménez-Blasco, Uxua, Moreno, Eduardo, Cólera, Maura, Díaz-Carrasco, Pilar, Arrebola, José C., Caballero, Alvaro, Morales, Julián, Vargas, Óscar A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8431348/
https://www.ncbi.nlm.nih.gov/pubmed/34502193
http://dx.doi.org/10.3390/ijms22179288
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author Jiménez-Blasco, Uxua
Moreno, Eduardo
Cólera, Maura
Díaz-Carrasco, Pilar
Arrebola, José C.
Caballero, Alvaro
Morales, Julián
Vargas, Óscar A.
author_facet Jiménez-Blasco, Uxua
Moreno, Eduardo
Cólera, Maura
Díaz-Carrasco, Pilar
Arrebola, José C.
Caballero, Alvaro
Morales, Julián
Vargas, Óscar A.
author_sort Jiménez-Blasco, Uxua
collection PubMed
description Redox flow batteries (RFB) are one of the most interesting technologies in the field of energy storage, since they allow the decoupling of power and capacity. Zinc–bromine flow batteries (ZBFB) are a type of hybrid RFB, as the capacity depends on the effective area of the negative electrode (anode), on which metallic zinc is deposited during the charging process. Gaseous bromine is generated at the positive electrode (cathode) during the charging process, so the use of bromine complexing agents (BCA) is very important. These BCAs are quaternary amines capable of complexation with bromine and generating an organic phase, immiscible with the aqueous electrolyte. One of the most commonly used BCAs in RFB technology is 4-methylethylmorpholinium bromide (MEM-Br). In this work, an alternative quaternary amine 4-methylpropylmorpholinium bromide (MPM-Br) was studied. MPM-Br was integrated into the electrolyte, and 200 charge–discharge cycles were performed on the resulting ZBFBs. The obtained results were compared with those when MEM-Br was used, and it was observed that the electrolyte with MPM-Br displays a higher resistance in voltage and higher energy efficiency, making it a promising alternative to MEM-Br.
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spelling pubmed-84313482021-09-11 Enhanced Performance of Zn/Br Flow Battery Using N-Methyl-N-Propylmorpholinium Bromide as Complexing Agent Jiménez-Blasco, Uxua Moreno, Eduardo Cólera, Maura Díaz-Carrasco, Pilar Arrebola, José C. Caballero, Alvaro Morales, Julián Vargas, Óscar A. Int J Mol Sci Article Redox flow batteries (RFB) are one of the most interesting technologies in the field of energy storage, since they allow the decoupling of power and capacity. Zinc–bromine flow batteries (ZBFB) are a type of hybrid RFB, as the capacity depends on the effective area of the negative electrode (anode), on which metallic zinc is deposited during the charging process. Gaseous bromine is generated at the positive electrode (cathode) during the charging process, so the use of bromine complexing agents (BCA) is very important. These BCAs are quaternary amines capable of complexation with bromine and generating an organic phase, immiscible with the aqueous electrolyte. One of the most commonly used BCAs in RFB technology is 4-methylethylmorpholinium bromide (MEM-Br). In this work, an alternative quaternary amine 4-methylpropylmorpholinium bromide (MPM-Br) was studied. MPM-Br was integrated into the electrolyte, and 200 charge–discharge cycles were performed on the resulting ZBFBs. The obtained results were compared with those when MEM-Br was used, and it was observed that the electrolyte with MPM-Br displays a higher resistance in voltage and higher energy efficiency, making it a promising alternative to MEM-Br. MDPI 2021-08-27 /pmc/articles/PMC8431348/ /pubmed/34502193 http://dx.doi.org/10.3390/ijms22179288 Text en © 2021 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
Jiménez-Blasco, Uxua
Moreno, Eduardo
Cólera, Maura
Díaz-Carrasco, Pilar
Arrebola, José C.
Caballero, Alvaro
Morales, Julián
Vargas, Óscar A.
Enhanced Performance of Zn/Br Flow Battery Using N-Methyl-N-Propylmorpholinium Bromide as Complexing Agent
title Enhanced Performance of Zn/Br Flow Battery Using N-Methyl-N-Propylmorpholinium Bromide as Complexing Agent
title_full Enhanced Performance of Zn/Br Flow Battery Using N-Methyl-N-Propylmorpholinium Bromide as Complexing Agent
title_fullStr Enhanced Performance of Zn/Br Flow Battery Using N-Methyl-N-Propylmorpholinium Bromide as Complexing Agent
title_full_unstemmed Enhanced Performance of Zn/Br Flow Battery Using N-Methyl-N-Propylmorpholinium Bromide as Complexing Agent
title_short Enhanced Performance of Zn/Br Flow Battery Using N-Methyl-N-Propylmorpholinium Bromide as Complexing Agent
title_sort enhanced performance of zn/br flow battery using n-methyl-n-propylmorpholinium bromide as complexing agent
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8431348/
https://www.ncbi.nlm.nih.gov/pubmed/34502193
http://dx.doi.org/10.3390/ijms22179288
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