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

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• 作者：Aur茅lien Henry ; Sandrine Plumejeau ; Laurent Heux ; Nicolas Louvain ; Laure Monconduit ; Lorenzo Stievano ; Bruno Boury
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：July 15, 2015
• 年：2015
• 卷：7
• 期：27
• 页码：14584-14592
• 全文大小：491K
• ISSN：1944-8252

文摘

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 掳C, or into TiO₂@C nanocomposites by pyrolysis in argon at 600 and 900 掳C. Detailed characterization of these materials is reported here, along with an assessment of their performance as negative electrode materials for Li-ion batteries