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Article Dans Une Revue Chemistry of Materials Année : 2015

SiO 2 /Ionic Liquid Hybrid Nanoparticles for Solid-State Lithium Ion Conduction

Résumé

We report the physical and electrical characterization of a series of substituted imidazolium-based ionic liquids grafted on Stöber-type SiO2. This hybrid architecture affords an increase of the lithium transference to 0.56 by hindering TFSI– (bis(trifluoromethane)sulfonimide) mobility to the total ionic conductivity. When doped with 16 wt % wt LiTFSI, the resulting hybrid organic/inorganic solid material exhibits a lithium diffusion coefficient of 2 × 10–12 m2/s at 87 °C and a conductivity of ca. 10–6 S/cm at room temperature and 10–4 S/cm at 65 °C with an activation energy barrier of 0.89 eV.

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Chimie
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Dates et versions

hal-02947755 , version 1 (24-09-2020)

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Sébastien Delacroix, Frédéric Sauvage, Marine Reynaud, Michael Deschamps, Stéphanie Bruyère, et al.. SiO 2 /Ionic Liquid Hybrid Nanoparticles for Solid-State Lithium Ion Conduction. Chemistry of Materials, 2015, 27 (23), pp.7926-7933. ⟨10.1021/acs.chemmater.5b02944⟩. ⟨hal-02947755⟩
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