SiO2/Ionic Liquid Hybrid Nanoparticles for Solid-State Lithium Ion Conduction

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• 作者：S茅bastien Delacroix ; Fr茅d茅ric Sauvage ; Marine Reynaud ; Michael Deschamps ; St茅phanie Bruy猫re ; Matthieu Becuwe ; Denis Postel ; Jean-Marie Tarascon ; Albert Nguyen Van Nhien
• 刊名：Chemistry of Materials
• 出版年：2015
• 出版时间：December 8, 2015
• 年：2015
• 卷：27
• 期：23
• 页码：7926-7933
• 全文大小：455K
• ISSN：1520-5002

文摘

We report the physical and electrical characterization of a series of substituted imidazolium-based ionic liquids grafted on St枚ber-type SiO<sub>2sub>. This hybrid architecture affords an increase of the lithium transference to 0.56 by hindering TFSI<sup>鈥?/sup> (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 脳 10<sup>鈥?2sup> m<sup>2sup>/s at 87 掳C and a conductivity of ca. 10<sup>鈥?sup> S/cm at room temperature and 10<sup>鈥?sup> S/cm at 65 掳C with an activation energy barrier of 0.89 eV.