Hydrogen‐Bonding‐Mediated Synthesis of Atomically Thin TiO2 Films with Exposed (001) Facets and Applications in Fast Lithium Insertion/Extraction |
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| Authors: | Dr. Hongye Zhang Dr. Zhenzhen Yang Wei Gan Dr. Yanfei Zhao Dr. Bo Yu Huanjun Xu Zhishuang Ma Leiduan Hao Dechao Chen Dr. Shiding Miao Prof. Zhimin Liu |
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| Affiliation: | 1. Institute of Chemistry, Chinese Academy of Sciences, No. 2, Zhongguancun Beiyijie, Beijing 100190 (China);2. School of Chemistry and Chemical Engineering, Hefei University of Technology, Tunxi Road. 193, Hefei, Anhui Prov. 230009 (China) |
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| Abstract: | Ultrathin two‐dimensional (2D) crystalline materials show high specific surface area (SA) of high energy (HE) facets, imparting a significant improvement in their performances. Herein we report a novel route to synthesize TiO2 nanofilms (NFs) with atomic thickness (<2.0 nm) through a solvothermal reaction mediated by the hydrogen‐bonding networks constructed by hydroquinone (HQ). The resultant TiO2 NFs have nearly 100 % exposed (001) facets and give an extremely high SA up to 487 m2 g?1. The synergistic effect of HQ and choline chloride plays a vital role in the formation of TiO2 NFs and in the exposure of HE (001) facets. Because of its ultrathin feature and exposed (001) facet, the N2‐annealled TiO2 NFs showed fast kinetics of lithium insertion/extraction, demonstrating foreseeable applications in the energy storage. |
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| Keywords: | hydrogen bonds insertion lithium nanostructures synergistic effect |
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