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Swelling mechanism of polyoxazoline-based gel polymer electrolytes for Lithium-ion batteries
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SYSNO ASEP 0617720 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Swelling mechanism of polyoxazoline-based gel polymer electrolytes for Lithium-ion batteries Author(s) Pathak, Mayank (UMCH-V) RID
Mahun, Andrii (UMCH-V) ORCID, RID
Černoch, Peter (UMCH-V) RID, ORCID
Morávková, Zuzana (UMCH-V) RID, ORCIDSource Title ACS Applied Polymer Materials. - : American Chemical Society - ISSN 2637-6105
Roč. 7, č. 4 (2025), s. 2371-2383Number of pages 13 s. Language eng - English Country US - United States Keywords polymer gel electrolytes (GPEs) ; polyoxazoline (POx) ; Raman spectroscopy Subject RIV CD - Macromolecular Chemistry OECD category Polymer science Method of publishing Open access Institutional support UMCH-V - RVO:61389013 UT WOS 001435148400001 EID SCOPUS 86000387505 DOI https://doi.org/10.1021/acsapm.4c03473 Annotation Gel polymer electrolytes for lithium-ion batteries are typically prepared by swelling a preprepared cross-linked polymer network with a solution of lithium salt. This step of the electrolyte preparation is assumed to be straightforward, and very little attention has been paid to the investigation of the swelling mechanism. We questioned the common assumption that the feed solution swells the polymer network at the same concentration and fed a polyoxazoline network with several concentrations of lithium bis(oxalato)borate and lithium bis(trifluoromethane)sulfonimide solutions in propylene carbonate and diglyme. We thoroughly analyzed the obtained gels using NMR and Raman spectroscopy and evaluated the content of the solvent and salt in the polymer matrix, their mutual interactions, and mobilities. We found that this assumption was invalid and created a model of swelling of a polyoxazoline network with a salt solution. Our model implies the importance of often neglected solvent–polymer interactions or lack thereof. In the context of the function of the polyoxazoline system, our results provide insights into the efficiency of polymer matrices for gel polymer electrolytes, which will help avoid inefficient polymer matrices in the future. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2026 Electronic address https://pubs.acs.org/doi/10.1021/acsapm.4c03473
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