A significant enhancement of sodium ion ...
Document type :
Article dans une revue scientifique: Article original
DOI :
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Title :
A significant enhancement of sodium ion conductivity in phosphate glasses by addition of WO3 and MoO3: the effect of mixed conventional–conditional glass-forming oxides
Author(s) :
Renka, Sanja [Auteur]
Rudjer Boskovic Institute [Zagreb]
Pavić, Luka [Auteur]
Institut Ruđer Bošković [IRB]
Tricot, Gregory [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Mošner, Petr [Auteur]
Department of General and Inorganic Chemistry [University of Pardubice]
Koudelka, Ladislav [Auteur]
Department of General and Inorganic Chemistry [University of Pardubice]
Moguš-Milanković, Andrea [Auteur]
Rudjer Boskovic Institute [Zagreb]
Šantić, Ana [Auteur]
Rudjer Boskovic Institute [Zagreb]
Rudjer Boskovic Institute [Zagreb]
Pavić, Luka [Auteur]
Institut Ruđer Bošković [IRB]
Tricot, Gregory [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Mošner, Petr [Auteur]
Department of General and Inorganic Chemistry [University of Pardubice]
Koudelka, Ladislav [Auteur]
Department of General and Inorganic Chemistry [University of Pardubice]
Moguš-Milanković, Andrea [Auteur]
Rudjer Boskovic Institute [Zagreb]
Šantić, Ana [Auteur]
Rudjer Boskovic Institute [Zagreb]
Journal title :
Physical Chemistry Chemical Physics
Volume number :
23
Pages :
9761-9772
Publication date :
2021
HAL domain(s) :
Chimie
English abstract : [en]
Ion conducting oxide glasses are attractive materials for application in various electrochemical devices and an understanding of the structure–transport properties relationship is crucial for their development. An interesting ...
Show more >Ion conducting oxide glasses are attractive materials for application in various electrochemical devices and an understanding of the structure–transport properties relationship is crucial for their development. An interesting effect of glass structure on the dynamics of mobile ions is the mixed glass-former effect which causes a non-linear change of ionic conductivity when glass-forming oxides get gradually substituted. Here, we report a strong, positive effect of structural changes on the conductivity of sodium ions in two glass systems 40Na2O–xMoO3–(60−x)P2O5 and 40Na2O–xWO3–(60−x)P2O5; x = 0–50 mol% where a conventional glass-forming oxide (P2O5) is gradually replaced by WO3/MoO3 which are conditional ones. In both glass systems, the compositional change in DC conductivity is non-linear, with the maximal increase of four orders of magnitude in the case of WO3 and three orders of magnitude in the case of MoO3. This significant enhancement of ionic conductivity is related to the formation of mixed phosphate–tungstate and phosphate–molybdate units in the glass network. The facilitating effect of these structural units on sodium ion dynamics is also observed in the changes of the shape of frequency-dependent conductivity and in the values of typical spatial extent of diffusion of sodium ions known as the Sidebottom length.Show less >
Show more >Ion conducting oxide glasses are attractive materials for application in various electrochemical devices and an understanding of the structure–transport properties relationship is crucial for their development. An interesting effect of glass structure on the dynamics of mobile ions is the mixed glass-former effect which causes a non-linear change of ionic conductivity when glass-forming oxides get gradually substituted. Here, we report a strong, positive effect of structural changes on the conductivity of sodium ions in two glass systems 40Na2O–xMoO3–(60−x)P2O5 and 40Na2O–xWO3–(60−x)P2O5; x = 0–50 mol% where a conventional glass-forming oxide (P2O5) is gradually replaced by WO3/MoO3 which are conditional ones. In both glass systems, the compositional change in DC conductivity is non-linear, with the maximal increase of four orders of magnitude in the case of WO3 and three orders of magnitude in the case of MoO3. This significant enhancement of ionic conductivity is related to the formation of mixed phosphate–tungstate and phosphate–molybdate units in the glass network. The facilitating effect of these structural units on sodium ion dynamics is also observed in the changes of the shape of frequency-dependent conductivity and in the values of typical spatial extent of diffusion of sodium ions known as the Sidebottom length.Show less >
Language :
Anglais
Audience :
Non spécifiée
Popular science :
Non
Administrative institution(s) :
ENSCL
CNRS
Université de Lille
CNRS
Université de Lille
Collections :
Research team(s) :
Propriétés magnéto structurales des matériaux (PMSM)
Submission date :
2024-02-21T17:11:50Z
2024-02-27T10:44:11Z
2024-02-27T10:44:11Z