Interplay between Conductivity, Matrix Relaxations and Composition of Ca-Polyoxyethylene Polymer Electrolytes

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Show simple item record Martínez Cisneros, Cynthia Susana Pagot, Gioele Vezzu, Keti Antonelli, Claire Levenfeld Laredo, Belén Lumbier Álvarez, Alejandro Sánchez, Jean Yves Di Noto, Vito 2022-02-03T12:30:30Z 2022-02-03T12:30:30Z 2021-07-01
dc.identifier.bibliographicCitation Pagot, G., Vezzù, K., Martinez‐Cisneros, C. S., Antonelli, C., Levenfeld, B., Varez, A., Sanchez, J. & di Noto, V. (2021). Interplay between Conductivity, Matrix Relaxations and Composition of Ca‐Polyoxyethylene Polymer Electrolytes. ChemElectroChem, 8(13), 2459–2466.
dc.identifier.issn 2196-0216
dc.description This article also appears in: In Memoriam: Prof. Jean-Michel Savéant.
dc.description.abstract In this report, the conductivity mechanism of Ca2+-ion in polyoxyethylene (POE) solid polymer electrolytes (SPEs) for calcium secondary batteries is investigated by broadband electrical spectroscopy studies. SPEs are obtained by dissolving into the POE hosting matrix three different calcium salts: CaTf2, Ca(TFSI)2 and CaI2. The investigation of the electric response of the synthetized SPEs reveals the presence in materials of two polarization phenomena and two dielectric relaxation events. It is demonstrated that the nature of the anion (i. e., steric hindrance, charge density and ability to act as coordination ligand) and the density of “dynamic crosslinks” of SPEs is fundamental in the establishment of ion-ion/ion-polymer interactions. The long-range charge migration processes occurring along the two revealed percolation pathways of the electrolytes are generally coupled with the polymer host dynamics and depend on the temperature and the anion nature. This study offers the needed tools for understanding Ca2+ conduction in POE-based electrolytes.
dc.description.sponsorship This work has been supported by the European Union’s Horizon 2020 research and innovation programme under grant agreement No 829145(FETOPEN-VIDICAT).V. Di Notothanks the University CarlosIII of Madrid for the “Catedras de Excelencia UC3M-Santander” (Chairof Excellence UC3M-Santander).
dc.format.extent 8
dc.language.iso eng
dc.publisher Wiley
dc.rights © 2021 The Authors. ChemElectroChem published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
dc.rights Atribución-NoComercial 3.0 España
dc.subject.other Conducting materials
dc.subject.other Broadband electrical spectroscopy
dc.subject.other Calcium electrolytes
dc.subject.other Solid polymer electrolytes
dc.subject.other Energy conversion
dc.title Interplay between Conductivity, Matrix Relaxations and Composition of Ca-Polyoxyethylene Polymer Electrolytes
dc.type article
dc.subject.eciencia Ingeniería Industrial
dc.subject.eciencia Materiales
dc.subject.eciencia Química
dc.rights.accessRights openAccess
dc.relation.projectID info:eu-repo/grantAgreement/EC/GA-829145
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 2459
dc.identifier.publicationissue 13
dc.identifier.publicationlastpage 2466
dc.identifier.publicationtitle ChemElectroChem
dc.identifier.publicationvolume 8
dc.identifier.uxxi AR/0000029116
dc.contributor.funder European Commission
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