Ultrathin single-crystalline TiO2nanosheets anchored on graphene to be hybrid network for high-rate and long cycle-life sodium battery electrode application

Anwer Shoaib, Yongxin Huang, Jia Liu, Jiajia Liu, Meng Xu, Ziheng Wang, Renjie Chen, Jiatao Zhang, Feng Wu

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

Abstract

In view of the growing concern about energy management issues, sodium ion batteries (SIBs) as cheap and environmentally friendly devices have increasingly received wide research attentions. The high current rate and long cycle-life of SIBs are considered as two key parameters determining its potential for practical applications. In this work, the rigid single-crystalline anatase TiO2nanosheets (NSs) with a thickness of ∼4 nm has been firstly prepared, based on which a stable nanostructured network consisting of ultrathin anatase TiO2NSs homogeneously anchored on graphene through chemical bonding (TiO2NSs-G) has fabricated by hydrothermal process and subsequent calcination treatment. The morphology, crystallization, chemical compositions and the intimate maximum contact between TiO2NSs and graphene are confirmed by TEM, SEM, XRD, XPS and Raman characterizations. The results of electrochemical performance tests indicated that the TiO2NSs-G hybrid network could be consider as a promising anode material for SIBs, in assessment of its remarkably high current rate and long cycle-life aside from the improved specific capacity, rate capability and cycle stability.

Original languageBritish English
Pages (from-to)405-413
Number of pages9
JournalJournal of Power Sources
Volume342
DOIs
StatePublished - 2017

Keywords

  • 3D hybrid network
  • Graphene
  • Intimate stacking
  • Sodium ion battery anode
  • Ultrathin single-crystalline TiOnanosheets

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