• myGriffith
    • Staff portal
    • Contact Us⌄
      • Future student enquiries 1800 677 728
      • Current student enquiries 1800 154 055
      • International enquiries +61 7 3735 6425
      • General enquiries 07 3735 7111
      • Online enquiries
      • Staff phonebook
    View Item 
    •   Home
    • Griffith Research Online
    • Journal articles
    • View Item
    • Home
    • Griffith Research Online
    • Journal articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

  • All of Griffith Research Online
    • Communities & Collections
    • Authors
    • By Issue Date
    • Titles
  • This Collection
    • Authors
    • By Issue Date
    • Titles
  • Statistics

  • Most Popular Items
  • Statistics by Country
  • Most Popular Authors
  • Support

  • Contact us
  • FAQs
  • Admin login

  • Login
  • Resilient mesoporous TiO2/graphene nanocomposite for high rate performance lithium-ion batteries

    Author(s)
    Qiu, Jingxia
    Lai, Chao
    Wang, Yazhou
    Li, Sheng
    Zhang, Shanqing
    Griffith University Author(s)
    Zhang, Shanqing
    Year published
    2014
    Metadata
    Show full item record
    Abstract
    Mesoporous TiO2/graphene composite is synthesized using graphene oxide (GO) and cheap TiOSO4 as precursors via a facile one-step hydrothermal route. In this process, Ti(OH)4, the hydrolysis product of TiOSO4 in acidic environment reacts with functional groups (epoxy bridges, hydroxyl groups, carboxyl groups) on the GO sheets, which establishes strong Ti-O-C chemical bonds that link in situ formed TiO2 nanoparticles and graphene sheets together. Fourier transform infrared (FT-IR), Raman and X-ray photoelectron spectroscopy (XPS) confirms the existence of the Ti-O-C chemical bond in the resultant composite. Such kind of chemical ...
    View more >
    Mesoporous TiO2/graphene composite is synthesized using graphene oxide (GO) and cheap TiOSO4 as precursors via a facile one-step hydrothermal route. In this process, Ti(OH)4, the hydrolysis product of TiOSO4 in acidic environment reacts with functional groups (epoxy bridges, hydroxyl groups, carboxyl groups) on the GO sheets, which establishes strong Ti-O-C chemical bonds that link in situ formed TiO2 nanoparticles and graphene sheets together. Fourier transform infrared (FT-IR), Raman and X-ray photoelectron spectroscopy (XPS) confirms the existence of the Ti-O-C chemical bond in the resultant composite. Such kind of chemical bond could prevent the aggregation of TiO2 nanoparticles, avoid the restacking of graphene sheets, facilitate the fast transport of the Li-ions, enhance electronic conductivity, offer a high tap density, maintain the structural integrity during charge/discharge process, and consequently achieve excellent cycle stability and high rate capability in Li-ion batteries. At the current density of 5000 mA g-1, the discharge capacity of the composite can be readily retained at 141.7 mAh g-1 after 100 cycles, which is outstanding among the TiO2 composites in the literature.
    View less >
    Journal Title
    Chemical Engineering Journal
    Volume
    256
    DOI
    https://doi.org/10.1016/j.cej.2014.06.116
    Subject
    Solid state chemistry
    Electrochemistry
    Chemical engineering
    Civil engineering
    Environmental engineering
    Publication URI
    http://hdl.handle.net/10072/67008
    Collection
    • Journal articles

    Footer

    Disclaimer

    • Privacy policy
    • Copyright matters
    • CRICOS Provider - 00233E
    • TEQSA: PRV12076

    Tagline

    • Gold Coast
    • Logan
    • Brisbane - Queensland, Australia
    First Peoples of Australia
    • Aboriginal
    • Torres Strait Islander