An architectured TiO 2 nanosheet with discrete integrated nanocrystalline subunits and its application in lithium batteries

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

42 Scopus Citations
View graph of relations

Author(s)

  • Zongyu Huang
  • Jun Li
  • Kai Huang
  • Jianxin Zhong

Detail(s)

Original languageEnglish
Pages (from-to)21513-21518
Journal / PublicationJournal of Materials Chemistry
Volume22
Issue number40
Publication statusPublished - 28 Oct 2012

Abstract

An anatase TiO 2 nanosheet with discrete integrated subunits was successfully synthesized via a rapid annealing treatment, which could be classified as non-equilibrium conditions on an as-prepared hydrogen titanate nanosheet. This unique TiO 2 nano-object is uniform in length and width as a "sheet-like" shape which is integrated with numerous discrete nanocrystalline subunits. In contrast with the internal architecture of the TiO 2 nanosheets produced under equilibrium and non-equilibrium conditions, the local structure collapse transformation mechanism from the hydrogen titanate nanosheet to the anatase TiO 2 nanosheet with internal architecture is discussed. This unique anatase nano-object electrode exhibits high reversible lithium ion storage capacities and superior cyclic capacity retention at a high current rate. Such enhanced lithium storage performance could be attributed to the discrete subunits aggregation allowing efficient Li + ion diffusion and the interior anisotropy in the nanosheet can be more effective to buffer the volume variation during the lithium insertion/desertion cycle. © 2012 The Royal Society of Chemistry.

Citation Format(s)

An architectured TiO 2 nanosheet with discrete integrated nanocrystalline subunits and its application in lithium batteries. / Ren, Long; Liu, Yundan; Qi, Xiang; Hui, K. S.; Hui, K. N.; Huang, Zongyu; Li, Jun; Huang, Kai; Zhong, Jianxin.

In: Journal of Materials Chemistry, Vol. 22, No. 40, 28.10.2012, p. 21513-21518.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review