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Reversible Electrochemical Charging of n-Type Conjugated Polymer Electrodes in Aqueous Electrolytes
[Image: see text] Conjugated polymers achieve redox activity in electrochemical devices by combining redox-active, electronically conducting backbones with ion-transporting side chains that can be tuned for different electrolytes. In aqueous electrolytes, redox activity can be accomplished by attach...
Autores principales: | , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8447255/ https://www.ncbi.nlm.nih.gov/pubmed/34469688 http://dx.doi.org/10.1021/jacs.1c06713 |
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author | Szumska, Anna A. Maria, Iuliana P. Flagg, Lucas Q. Savva, Achilleas Surgailis, Jokubas Paulsen, Bryan D. Moia, Davide Chen, Xingxing Griggs, Sophie Mefford, J. Tyler Rashid, Reem B. Marks, Adam Inal, Sahika Ginger, David S. Giovannitti, Alexander Nelson, Jenny |
author_facet | Szumska, Anna A. Maria, Iuliana P. Flagg, Lucas Q. Savva, Achilleas Surgailis, Jokubas Paulsen, Bryan D. Moia, Davide Chen, Xingxing Griggs, Sophie Mefford, J. Tyler Rashid, Reem B. Marks, Adam Inal, Sahika Ginger, David S. Giovannitti, Alexander Nelson, Jenny |
author_sort | Szumska, Anna A. |
collection | PubMed |
description | [Image: see text] Conjugated polymers achieve redox activity in electrochemical devices by combining redox-active, electronically conducting backbones with ion-transporting side chains that can be tuned for different electrolytes. In aqueous electrolytes, redox activity can be accomplished by attaching hydrophilic side chains to the polymer backbone, which enables ionic transport and allows volumetric charging of polymer electrodes. While this approach has been beneficial for achieving fast electrochemical charging in aqueous solutions, little is known about the relationship between water uptake by the polymers during electrochemical charging and the stability and redox potentials of the electrodes, particularly for electron-transporting conjugated polymers. We find that excessive water uptake during the electrochemical charging of polymer electrodes harms the reversibility of electrochemical processes and results in irreversible swelling of the polymer. We show that small changes of the side chain composition can significantly increase the reversibility of the redox behavior of the materials in aqueous electrolytes, improving the capacity of the polymer by more than one order of magnitude. Finally, we show that tuning the local environment of the redox-active polymer by attaching hydrophilic side chains can help to reach high fractions of the theoretical capacity for single-phase electrodes in aqueous electrolytes. Our work shows the importance of chemical design strategies for achieving high electrochemical stability for conjugated polymers in aqueous electrolytes. |
format | Online Article Text |
id | pubmed-8447255 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-84472552021-09-20 Reversible Electrochemical Charging of n-Type Conjugated Polymer Electrodes in Aqueous Electrolytes Szumska, Anna A. Maria, Iuliana P. Flagg, Lucas Q. Savva, Achilleas Surgailis, Jokubas Paulsen, Bryan D. Moia, Davide Chen, Xingxing Griggs, Sophie Mefford, J. Tyler Rashid, Reem B. Marks, Adam Inal, Sahika Ginger, David S. Giovannitti, Alexander Nelson, Jenny J Am Chem Soc [Image: see text] Conjugated polymers achieve redox activity in electrochemical devices by combining redox-active, electronically conducting backbones with ion-transporting side chains that can be tuned for different electrolytes. In aqueous electrolytes, redox activity can be accomplished by attaching hydrophilic side chains to the polymer backbone, which enables ionic transport and allows volumetric charging of polymer electrodes. While this approach has been beneficial for achieving fast electrochemical charging in aqueous solutions, little is known about the relationship between water uptake by the polymers during electrochemical charging and the stability and redox potentials of the electrodes, particularly for electron-transporting conjugated polymers. We find that excessive water uptake during the electrochemical charging of polymer electrodes harms the reversibility of electrochemical processes and results in irreversible swelling of the polymer. We show that small changes of the side chain composition can significantly increase the reversibility of the redox behavior of the materials in aqueous electrolytes, improving the capacity of the polymer by more than one order of magnitude. Finally, we show that tuning the local environment of the redox-active polymer by attaching hydrophilic side chains can help to reach high fractions of the theoretical capacity for single-phase electrodes in aqueous electrolytes. Our work shows the importance of chemical design strategies for achieving high electrochemical stability for conjugated polymers in aqueous electrolytes. American Chemical Society 2021-09-01 2021-09-15 /pmc/articles/PMC8447255/ /pubmed/34469688 http://dx.doi.org/10.1021/jacs.1c06713 Text en © 2021 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 | Szumska, Anna A. Maria, Iuliana P. Flagg, Lucas Q. Savva, Achilleas Surgailis, Jokubas Paulsen, Bryan D. Moia, Davide Chen, Xingxing Griggs, Sophie Mefford, J. Tyler Rashid, Reem B. Marks, Adam Inal, Sahika Ginger, David S. Giovannitti, Alexander Nelson, Jenny Reversible Electrochemical Charging of n-Type Conjugated Polymer Electrodes in Aqueous Electrolytes |
title | Reversible
Electrochemical Charging of n-Type
Conjugated Polymer Electrodes in Aqueous Electrolytes |
title_full | Reversible
Electrochemical Charging of n-Type
Conjugated Polymer Electrodes in Aqueous Electrolytes |
title_fullStr | Reversible
Electrochemical Charging of n-Type
Conjugated Polymer Electrodes in Aqueous Electrolytes |
title_full_unstemmed | Reversible
Electrochemical Charging of n-Type
Conjugated Polymer Electrodes in Aqueous Electrolytes |
title_short | Reversible
Electrochemical Charging of n-Type
Conjugated Polymer Electrodes in Aqueous Electrolytes |
title_sort | reversible
electrochemical charging of n-type
conjugated polymer electrodes in aqueous electrolytes |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8447255/ https://www.ncbi.nlm.nih.gov/pubmed/34469688 http://dx.doi.org/10.1021/jacs.1c06713 |
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