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Mixed Ionic and Electronic Conduction in TeO(2)-ZnO-V(2)O(5) Glasses towards Good Dielectric Features

The melt-quenching technique was used to synthesize tellurite glasses of the chemical composition 80TeO(2)-(20-x) ZnO-xV(2)O(5). X-ray diffraction (XRD) patterns indicate the amorphous nature of the prepared glasses. Raman and FTIR measurements demonstrate a progressive substitution of the Te-O-Te l...

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Autores principales: Mechrgui, Imen, Ben Gouider Trabelsi, Amira, Alkallas, Fatemah. H., Nasri, Saber, Elhouichet, Habib
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9653603/
https://www.ncbi.nlm.nih.gov/pubmed/36363251
http://dx.doi.org/10.3390/ma15217659
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author Mechrgui, Imen
Ben Gouider Trabelsi, Amira
Alkallas, Fatemah. H.
Nasri, Saber
Elhouichet, Habib
author_facet Mechrgui, Imen
Ben Gouider Trabelsi, Amira
Alkallas, Fatemah. H.
Nasri, Saber
Elhouichet, Habib
author_sort Mechrgui, Imen
collection PubMed
description The melt-quenching technique was used to synthesize tellurite glasses of the chemical composition 80TeO(2)-(20-x) ZnO-xV(2)O(5). X-ray diffraction (XRD) patterns indicate the amorphous nature of the prepared glasses. Raman and FTIR measurements demonstrate a progressive substitution of the Te-O-Te linkages by the Te-O-V bridges and the formation of VO(4) and VO(5) units by a change of the vanadium coordination due to the higher number of oxygens incorporated by further addition of V(2)O(5). The AC conductivity was investigated in the frequency range of 40 Hz to 10(7) Hz between 473 K to 573 K. A good coherence of the AC conductivity was found using a model correlating the barrier hopping (CPH) and the dominant conduction process changes from ionic to polaronic with the addition of V(2)O(5). The dielectric constant exhibits high values in the range of lower and medium frequencies. Both variations of the electric modulus and the dielectric loss parameters with frequency and temperature showed a relaxation character mainly assigned to the vanadate phases. The electric modulus displays a non-Debye dielectric dispersion and a relaxation process. The present results open the door to future zinc-tellurite glasses-doped vanadium exploitation as a potential electrolyte-based material for solid-state batteries.
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spelling pubmed-96536032022-11-15 Mixed Ionic and Electronic Conduction in TeO(2)-ZnO-V(2)O(5) Glasses towards Good Dielectric Features Mechrgui, Imen Ben Gouider Trabelsi, Amira Alkallas, Fatemah. H. Nasri, Saber Elhouichet, Habib Materials (Basel) Article The melt-quenching technique was used to synthesize tellurite glasses of the chemical composition 80TeO(2)-(20-x) ZnO-xV(2)O(5). X-ray diffraction (XRD) patterns indicate the amorphous nature of the prepared glasses. Raman and FTIR measurements demonstrate a progressive substitution of the Te-O-Te linkages by the Te-O-V bridges and the formation of VO(4) and VO(5) units by a change of the vanadium coordination due to the higher number of oxygens incorporated by further addition of V(2)O(5). The AC conductivity was investigated in the frequency range of 40 Hz to 10(7) Hz between 473 K to 573 K. A good coherence of the AC conductivity was found using a model correlating the barrier hopping (CPH) and the dominant conduction process changes from ionic to polaronic with the addition of V(2)O(5). The dielectric constant exhibits high values in the range of lower and medium frequencies. Both variations of the electric modulus and the dielectric loss parameters with frequency and temperature showed a relaxation character mainly assigned to the vanadate phases. The electric modulus displays a non-Debye dielectric dispersion and a relaxation process. The present results open the door to future zinc-tellurite glasses-doped vanadium exploitation as a potential electrolyte-based material for solid-state batteries. MDPI 2022-10-31 /pmc/articles/PMC9653603/ /pubmed/36363251 http://dx.doi.org/10.3390/ma15217659 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mechrgui, Imen
Ben Gouider Trabelsi, Amira
Alkallas, Fatemah. H.
Nasri, Saber
Elhouichet, Habib
Mixed Ionic and Electronic Conduction in TeO(2)-ZnO-V(2)O(5) Glasses towards Good Dielectric Features
title Mixed Ionic and Electronic Conduction in TeO(2)-ZnO-V(2)O(5) Glasses towards Good Dielectric Features
title_full Mixed Ionic and Electronic Conduction in TeO(2)-ZnO-V(2)O(5) Glasses towards Good Dielectric Features
title_fullStr Mixed Ionic and Electronic Conduction in TeO(2)-ZnO-V(2)O(5) Glasses towards Good Dielectric Features
title_full_unstemmed Mixed Ionic and Electronic Conduction in TeO(2)-ZnO-V(2)O(5) Glasses towards Good Dielectric Features
title_short Mixed Ionic and Electronic Conduction in TeO(2)-ZnO-V(2)O(5) Glasses towards Good Dielectric Features
title_sort mixed ionic and electronic conduction in teo(2)-zno-v(2)o(5) glasses towards good dielectric features
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9653603/
https://www.ncbi.nlm.nih.gov/pubmed/36363251
http://dx.doi.org/10.3390/ma15217659
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