| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Florjańczyk, Zbigniew
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2018Thermally induced structural transformations of linear coordination polymers based on aluminum tris(diorganophosphates)citations
- 2016Linear Coordination Polymers Based on Aluminum Phosphates: Synthesis, Crystal Structure and Morphologycitations
- 2015Synthesis and characterization of lithium-salt complexes with difluoroalkoxyborates for application as lithium electrolytescitations
- 2015Study of ageing effects in polymer-in-salt electrolytes based on poly(acrylonitrile-co-butyl acrylate) and lithium saltscitations
- 2014Lithium electrolytes based on modified imidazolium ionic liquidscitations
- 2012Segmental copolymers of condensation polyesters and polylactidecitations
- 2011Synthesis and characterization of new trifluoroalkoxyborates lithium salts of ionic liquid propertiescitations
- 2004Polymer-in-salt electrolytes based on acrylonitrile/butyl acrylate copolymers and lithium saltscitations
- 2003Effects of inhomogeneity on ionic conductivity and relaxations in PEO and PEO–salt complexescitations
- 2000The effect of solvent and proton donor type on the conductivity and physico-chemical properties of poly(vinylidene fluoride)-based proton-conducting gel electrolytescitations
Places of action
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article
Study of ageing effects in polymer-in-salt electrolytes based on poly(acrylonitrile-co-butyl acrylate) and lithium salts
Abstract
Polymer electrolytes composed of an acrylonitrile and butyl acrylate copolymer poly(AN-co-BuA) with addition of LiN(CF3SO2)(2) (LiTFSI) or LiI and LiTFSI salt mixture are studied by impedance spectroscopy, DSC, Raman spectroscopy, X-ray diffraction, SEM and TEM. Impedance study shows that the ionic conductivity of the electrolytes containing LiTFSI is strongly dependent on the salt content and transition from "salt-in-polymer" to "polymer-in-salt" regime is observed at high salt content. Gradual changes of physical properties of the studied polymer electrolytes are observed in the course of their prolonged storage under argon atmosphere. These include the increase of glass transition temperature and decrease of ionic conductivity. In order to study the effects of this ageing process, measurements on samples of electrolyte films were repeated after several months. Precipitation of salt, which occurred at the nanometer length scale is observed with the aid of electron microscopy in electrolytes containing more than 84 wt.% of salt. Crystalline salt is not observed in electrolytes with lower amount of salt - however, the results indicate the structural changes of salt aggregates, which strongly influence transport of ions through the electrolyte. For preparation of electrolytes with mixed LiTFSI and LiI salts, a mixture of salts (16 wt.% LiI, 84 wt.% LiTFSI) is used, which exhibits the lowest melting temperature. The electrolyte comprising poly(AN-co-BuA) and 65 wt.% of the salt mixture exhibits high ionic conductivity and turns out to be more stable than electrolytes comprising only LiTFSI salt. (C) 2015 Elsevier Ltd. All rights reserved.