Conversion of Nanocellulose Aerogel into TiO2 and TiO2@C Nano-thorns by Direct Anhydrous Mineralization with TiCl4. Evaluation of Electrochemical Properties in Li Batteries

Abstract : Nanostructured TiO2 and TiO2@C nanocomposites were prepared by an original process combining biotemplating and mineralization of aerogels of nanofibrillated cellulose (NFC). A direct one step treatment of NFC with TiCl4 in strictly anhydrous conditions allows TiO2 formation at the outermost part of the nanofibrils while preserving their shape and size. Such TiO2@cellulose composites can be transformed into TiO2 nanotubes (TiO2-NT) by calcination in air at 600 and 900 °C, or into TiO2@C nanocomposites by pyrolysis in argon at 600 and 900 °C. Detailed characterization of these materials is reported here, along with an assessment of their performance as negative electrode materials for Li-ion batteries
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https://hal.archives-ouvertes.fr/hal-01177752
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Submitted on : Friday, July 17, 2015 - 10:27:15 AM
Last modification on : Tuesday, May 28, 2019 - 2:06:08 PM

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Aurélien Henry, Sandrine Plumejeau, Laurent Heux, Nicolas Louvain, Laure Monconduit, et al.. Conversion of Nanocellulose Aerogel into TiO2 and TiO2@C Nano-thorns by Direct Anhydrous Mineralization with TiCl4. Evaluation of Electrochemical Properties in Li Batteries. ACS Applied Materials & Interfaces, Washington, D.C. : American Chemical Society, 2015, 7 (27), pp.14584-14592. ⟨10.1021/acsami.5b00299⟩. ⟨hal-01177752⟩

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