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Comparison of few-layer graphene prepared from natural graphite through fast synthesis approach

Journal Article


Abstract


  • We report the synthesis of high quality few-layer graphene on a large scale using high purity natural graphite from Sri Lanka. A novel thermal method was adapted to prepare graphene from intermediate graphite oxide, which was obtained by heating the intermediate at low temperature (above 150 °C) in air for 5 min and subsequent heating at 500 °C in Argon for 15 min. The samples were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, Raman spectroscopy etc. The properties and the performance of graphene were observed to depend on the graphite source. The reduced graphite oxide from Kahatagaha graphite source exhibits higher Brunauer-Emmett-Teller specific surface area ~500 m2 g-1 and stable specific capacity as an anode in Li-ion batteries, whereas Bogala graphite showed higher initial irreversibility and higher capacity as anode, exceeding the theoretical specific capacity of graphite. Both graphenes showed high electrical conductivity. The graphene, which exists in stacks of only a few layers, supposed to be 2-6 layers, would be promising for a vast variety of applications.

Authors


  •   Kottegoda, Iresha R. M. (external author)
  •   Gao, Xuanwen (external author)
  •   Nayanajith, Liyanage D. C. (external author)
  •   Manorathne, Chinthan H. (external author)
  •   Wang, Jun
  •   Wang, Jiazhao
  •   Liu, Hua K.
  •   Gofer, Yossef (external author)

Publication Date


  • 2015

Citation


  • Kottegoda, I. R. M., Gao, X., Nayanajith, L. D. C., Manorathne, C. H., Wang, J., Wang, J., Liu, H. & Gofer, Y. (2015). Comparison of few-layer graphene prepared from natural graphite through fast synthesis approach. Journal of Materials Science and Technology, 31 (9), 907-912.

Scopus Eid


  • 2-s2.0-84940495668

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1588

Number Of Pages


  • 5

Start Page


  • 907

End Page


  • 912

Volume


  • 31

Issue


  • 9

Abstract


  • We report the synthesis of high quality few-layer graphene on a large scale using high purity natural graphite from Sri Lanka. A novel thermal method was adapted to prepare graphene from intermediate graphite oxide, which was obtained by heating the intermediate at low temperature (above 150 °C) in air for 5 min and subsequent heating at 500 °C in Argon for 15 min. The samples were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, Raman spectroscopy etc. The properties and the performance of graphene were observed to depend on the graphite source. The reduced graphite oxide from Kahatagaha graphite source exhibits higher Brunauer-Emmett-Teller specific surface area ~500 m2 g-1 and stable specific capacity as an anode in Li-ion batteries, whereas Bogala graphite showed higher initial irreversibility and higher capacity as anode, exceeding the theoretical specific capacity of graphite. Both graphenes showed high electrical conductivity. The graphene, which exists in stacks of only a few layers, supposed to be 2-6 layers, would be promising for a vast variety of applications.

Authors


  •   Kottegoda, Iresha R. M. (external author)
  •   Gao, Xuanwen (external author)
  •   Nayanajith, Liyanage D. C. (external author)
  •   Manorathne, Chinthan H. (external author)
  •   Wang, Jun
  •   Wang, Jiazhao
  •   Liu, Hua K.
  •   Gofer, Yossef (external author)

Publication Date


  • 2015

Citation


  • Kottegoda, I. R. M., Gao, X., Nayanajith, L. D. C., Manorathne, C. H., Wang, J., Wang, J., Liu, H. & Gofer, Y. (2015). Comparison of few-layer graphene prepared from natural graphite through fast synthesis approach. Journal of Materials Science and Technology, 31 (9), 907-912.

Scopus Eid


  • 2-s2.0-84940495668

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1588

Number Of Pages


  • 5

Start Page


  • 907

End Page


  • 912

Volume


  • 31

Issue


  • 9