Publikation: Partial Solvation of Lithium Ions Enhances Conductivity in a Nanophase-Separated Polymer Electrolyte
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Datum
2024
Autor:innen
Vigil, Daniel L.
Ferko, Benjamin T.
Stevens, Mark J.
Winey, Karen I.
Frischknecht, Amalie L.
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Chemistry of Materials. ACS Publications. 2024, 36(19), S. 9970-9979. ISSN 0897-4756. eISSN 1520-5002. Verfügbar unter: doi: 10.1021/acs.chemmater.4c02398
Zusammenfassung
We demonstrate that a multiblock lithium-ion-conducting polymer can be swollen with ethylene carbonate solvent to increase the conductivity relative to the dry polymer material by nearly 4 orders of magnitude. This increase is due to the partial solvation of lithium ions by ethylene carbonate, which leads to Li+ diffusion along the solvent–polymer interface. This differs from the vehicular transport mechanism for lithium ions in pure solvent. We use a combination of broadband dielectric spectroscopy, X-ray scattering, and all-atom molecular dynamics simulations to probe the effect of the solvent on the polymer morphology and to elucidate the mechanism of lithium ion transport.
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Fachgebiet (DDC)
540 Chemie
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Ions, Layers, Morphology, Polymers, Solvents
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VIGIL, Daniel L., Benjamin T. FERKO, Anne SAUMER, Stefan MECKING, Mark J. STEVENS, Karen I. WINEY, Amalie L. FRISCHKNECHT, 2024. Partial Solvation of Lithium Ions Enhances Conductivity in a Nanophase-Separated Polymer Electrolyte. In: Chemistry of Materials. ACS Publications. 2024, 36(19), S. 9970-9979. ISSN 0897-4756. eISSN 1520-5002. Verfügbar unter: doi: 10.1021/acs.chemmater.4c02398BibTex
@article{Vigil2024-09-28Parti-70998,
year={2024},
doi={10.1021/acs.chemmater.4c02398},
title={Partial Solvation of Lithium Ions Enhances Conductivity in a Nanophase-Separated Polymer Electrolyte},
number={19},
volume={36},
issn={0897-4756},
journal={Chemistry of Materials},
pages={9970--9979},
author={Vigil, Daniel L. and Ferko, Benjamin T. and Saumer, Anne and Mecking, Stefan and Stevens, Mark J. and Winey, Karen I. and Frischknecht, Amalie L.}
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<dcterms:abstract>We demonstrate that a multiblock lithium-ion-conducting polymer can be swollen with ethylene carbonate solvent to increase the conductivity relative to the dry polymer material by nearly 4 orders of magnitude. This increase is due to the partial solvation of lithium ions by ethylene carbonate, which leads to Li<sup>+</sup> diffusion along the solvent–polymer interface. This differs from the vehicular transport mechanism for lithium ions in pure solvent. We use a combination of broadband dielectric spectroscopy, X-ray scattering, and all-atom molecular dynamics simulations to probe the effect of the solvent on the polymer morphology and to elucidate the mechanism of lithium ion transport.</dcterms:abstract>
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