title: Hydrogen-bonding-mediated synthesis of atomically thin TiO2 films with exposed (001) facets and applications in fast lithium insertion/extraction.
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 m(2)  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.
authors: Institute of Chemistry, Chinese Academy of Sciences, No. 2, Zhongguancun Beiyijie, Beijing 100190 (China).
authors: Hongye
authors: H
authors: Zhang
authors: Institute of Chemistry, Chinese Academy of Sciences, No. 2, Zhongguancun Beiyijie, Beijing 100190 (China).
authors: Zhenzhen
authors: Z
authors: Yang
authors: School of Chemistry and Chemical Engineering, Hefei University of Technology, Tunxi Road. 193, Hefei, Anhui Prov. 230009 (China).
authors: Wei
authors: W
authors: Gan
authors: Institute of Chemistry, Chinese Academy of Sciences, No. 2, Zhongguancun Beiyijie, Beijing 100190 (China).
authors: Yanfei
authors: Y
authors: Zhao
authors: Institute of Chemistry, Chinese Academy of Sciences, No. 2, Zhongguancun Beiyijie, Beijing 100190 (China).
authors: Bo
authors: B
authors: Yu
authors: Institute of Chemistry, Chinese Academy of Sciences, No. 2, Zhongguancun Beiyijie, Beijing 100190 (China).
authors: Huanjun
authors: H
authors: Xu
authors: Institute of Chemistry, Chinese Academy of Sciences, No. 2, Zhongguancun Beiyijie, Beijing 100190 (China).
authors: Zhishuang
authors: Z
authors: Ma
authors: Institute of Chemistry, Chinese Academy of Sciences, No. 2, Zhongguancun Beiyijie, Beijing 100190 (China).
authors: Leiduan
authors: L
authors: Hao
authors: School of Chemistry and Chemical Engineering, Hefei University of Technology, Tunxi Road. 193, Hefei, Anhui Prov. 230009 (China).
authors: Dechao
authors: D
authors: Chen
authors: School of Chemistry and Chemical Engineering, Hefei University of Technology, Tunxi Road. 193, Hefei, Anhui Prov. 230009 (China). miaosd@iccas.ac.cn.
authors: Shiding
authors: S
authors: Miao
authors: Institute of Chemistry, Chinese Academy of Sciences, No. 2, Zhongguancun Beiyijie, Beijing 100190 (China). liuzm@iccas.ac.cn.
authors: Zhimin
authors: Z
authors: Liu
keywords: hydrogen bonds; insertion; lithium; nanostructures; synergistic effect