Structure–Property Correlations in Aqueous Binary Na(+)/K(+)–CH(3)COO(–) Highly Concentrated Electrolytes
[Image: see text] Highly concentrated aqueous binary solutions of acetate salts are promising systems for different electrochemical applications, for example, energy storage devices. The very high solubility of CH(3)COOK allows us to obtain water-in-salt electrolyte concentrations, thus reducing ion...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10226112/ https://www.ncbi.nlm.nih.gov/pubmed/37255926 http://dx.doi.org/10.1021/acs.jpcc.3c01017 |
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author | Khalid, Shahid Pianta, Nicolò Bonizzoni, Simone Ferrara, Chiara Lorenzi, Roberto Paleari, Alberto Johansson, Patrik Mustarelli, Piercarlo Ruffo, Riccardo |
author_facet | Khalid, Shahid Pianta, Nicolò Bonizzoni, Simone Ferrara, Chiara Lorenzi, Roberto Paleari, Alberto Johansson, Patrik Mustarelli, Piercarlo Ruffo, Riccardo |
author_sort | Khalid, Shahid |
collection | PubMed |
description | [Image: see text] Highly concentrated aqueous binary solutions of acetate salts are promising systems for different electrochemical applications, for example, energy storage devices. The very high solubility of CH(3)COOK allows us to obtain water-in-salt electrolyte concentrations, thus reducing ion activity and extending the cathodic stability of an aqueous electrolyte. At the same time, the presence of Li(+) or Na(+) makes these solutions compatible with intercalation materials for the development of rechargeable alkaline-ion batteries. Although there is a growing interest in these systems, a fundamental understanding of their physicochemical properties is still lacking. Here, we report and discuss the physicochemical and electrochemical properties of a series of solutions based on 20 mol kg(–1) CH(3)COOK with different concentrations of CH(3)COONa. The most concentrated solution, 20 mol kg(–1) CH(3)COOK + 7 mol kg(–1) CH(3)COONa, gives the best compromise between transport properties and electrochemical stability, displaying a conductivity of 21.2 mS cm(–1) at 25 °C and a stability window of up to 3 V in “ideal” conditions, i.e., using a small surface area and highly electrocatalytic electrode in a flooded cell. Careful Raman spectroscopy analyses help to address the interaction network, the phase evolution with temperature, and the crystallization kinetics. |
format | Online Article Text |
id | pubmed-10226112 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-102261122023-05-30 Structure–Property Correlations in Aqueous Binary Na(+)/K(+)–CH(3)COO(–) Highly Concentrated Electrolytes Khalid, Shahid Pianta, Nicolò Bonizzoni, Simone Ferrara, Chiara Lorenzi, Roberto Paleari, Alberto Johansson, Patrik Mustarelli, Piercarlo Ruffo, Riccardo J Phys Chem C Nanomater Interfaces [Image: see text] Highly concentrated aqueous binary solutions of acetate salts are promising systems for different electrochemical applications, for example, energy storage devices. The very high solubility of CH(3)COOK allows us to obtain water-in-salt electrolyte concentrations, thus reducing ion activity and extending the cathodic stability of an aqueous electrolyte. At the same time, the presence of Li(+) or Na(+) makes these solutions compatible with intercalation materials for the development of rechargeable alkaline-ion batteries. Although there is a growing interest in these systems, a fundamental understanding of their physicochemical properties is still lacking. Here, we report and discuss the physicochemical and electrochemical properties of a series of solutions based on 20 mol kg(–1) CH(3)COOK with different concentrations of CH(3)COONa. The most concentrated solution, 20 mol kg(–1) CH(3)COOK + 7 mol kg(–1) CH(3)COONa, gives the best compromise between transport properties and electrochemical stability, displaying a conductivity of 21.2 mS cm(–1) at 25 °C and a stability window of up to 3 V in “ideal” conditions, i.e., using a small surface area and highly electrocatalytic electrode in a flooded cell. Careful Raman spectroscopy analyses help to address the interaction network, the phase evolution with temperature, and the crystallization kinetics. American Chemical Society 2023-05-13 /pmc/articles/PMC10226112/ /pubmed/37255926 http://dx.doi.org/10.1021/acs.jpcc.3c01017 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Khalid, Shahid Pianta, Nicolò Bonizzoni, Simone Ferrara, Chiara Lorenzi, Roberto Paleari, Alberto Johansson, Patrik Mustarelli, Piercarlo Ruffo, Riccardo Structure–Property Correlations in Aqueous Binary Na(+)/K(+)–CH(3)COO(–) Highly Concentrated Electrolytes |
title | Structure–Property
Correlations in Aqueous
Binary Na(+)/K(+)–CH(3)COO(–) Highly Concentrated Electrolytes |
title_full | Structure–Property
Correlations in Aqueous
Binary Na(+)/K(+)–CH(3)COO(–) Highly Concentrated Electrolytes |
title_fullStr | Structure–Property
Correlations in Aqueous
Binary Na(+)/K(+)–CH(3)COO(–) Highly Concentrated Electrolytes |
title_full_unstemmed | Structure–Property
Correlations in Aqueous
Binary Na(+)/K(+)–CH(3)COO(–) Highly Concentrated Electrolytes |
title_short | Structure–Property
Correlations in Aqueous
Binary Na(+)/K(+)–CH(3)COO(–) Highly Concentrated Electrolytes |
title_sort | structure–property
correlations in aqueous
binary na(+)/k(+)–ch(3)coo(–) highly concentrated electrolytes |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10226112/ https://www.ncbi.nlm.nih.gov/pubmed/37255926 http://dx.doi.org/10.1021/acs.jpcc.3c01017 |
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