Ionic conduction and thermal properties of poly(ethylene oxide)-Tm(CF3SO3)3 electrolyte films
Identifieur interne : 002848 ( Main/Exploration ); précédent : 002847; suivant : 002849Ionic conduction and thermal properties of poly(ethylene oxide)-Tm(CF3SO3)3 electrolyte films
Auteurs : M. M. Silva [Portugal] ; N. Goncalves [Portugal] ; M. J. Smith [Portugal] ; P. Lightfoot [Royaume-Uni]Source :
- Electrochimica acta [ 0013-4686 ] ; 1998.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
The electrical conductivity and thermal behaviour of solid polymer electrolyte films containing thulium triflate and poly(ethylene oxide) have been studied. Homogeneous electrolyte samples were prepared by using solvent casting and hot-pressing techniques to produce films with a composition defined by the general formula (EO)nTm(CF3SO3)3, where n lies between 3 and 150. This electrolyte system was found to show a surprisingly high total ionic conductivity in compositions with large salt concentrations. These materials, with n between 3 and 5, were apparently amorphous but crystallized slowly after prolonged annealing at room temperature. Thermal analysis showed the presence of a broad melting peak which may correspond to the fusion, or dissolution, of a salt-polymer complex
Affiliations:
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Le document en format XML
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SO<sub>3</sub>
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electrolyte films</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Differential scanning calorimetry</term>
<term>Electrical properties</term>
<term>Ethylene oxide polymer</term>
<term>Experimental study</term>
<term>Ionic conductivity</term>
<term>Polymer solid electrolyte</term>
<term>Thermal analysis</term>
<term>Thermogravimetry</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Etude expérimentale</term>
<term>Propriété électrique</term>
<term>Conductivité ionique</term>
<term>Analyse thermique</term>
<term>Thermogravimétrie</term>
<term>Calorimétrie différentielle balayage</term>
<term>Electrolyte solide polymère</term>
<term>Ethylène oxyde polymère</term>
<term>Thulium triflate</term>
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<front><div type="abstract" xml:lang="en">The electrical conductivity and thermal behaviour of solid polymer electrolyte films containing thulium triflate and poly(ethylene oxide) have been studied. Homogeneous electrolyte samples were prepared by using solvent casting and hot-pressing techniques to produce films with a composition defined by the general formula (EO)<sub>n</sub>
Tm(CF<sub>3</sub>
SO<sub>3</sub>
)<sub>3</sub>
, where n lies between 3 and 150. This electrolyte system was found to show a surprisingly high total ionic conductivity in compositions with large salt concentrations. These materials, with n between 3 and 5, were apparently amorphous but crystallized slowly after prolonged annealing at room temperature. Thermal analysis showed the presence of a broad melting peak which may correspond to the fusion, or dissolution, of a salt-polymer complex</div>
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