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Carbon-coated SnO(2)@C with hierarchically porous structures and graphite layers inside for a high-performance lithium-ion battery

Journal Article


Abstract


  • "A high-performance anode material was prepared from a hierarchically structured activated carbon which contains in situ graphene and nano-graphite. The activated carbon was immersed in a solution of SnCl(2)center dot 2H(2)O and subjected to ultrasound. As a result, nanoparticles of SnO(2) were uniformly deposited on the surface of the activated carbon. The composite material was then coated with a thin layer of carbon by soaking it in a sucrose solution, followed by carbonization of the adsorbed sucrose at 500 degrees C. The resulting composite showed an outstanding high-rate cycling performance that can deliver an initial discharge capacity of 1417 mAh g(-1) and maintain a discharge capacity of more than 400 mAh g(-1) after 100 cycles at a high current density of 1000 mA g(-1). This outstanding electrochemical performance is likely to be related to a unique combination of the excellent electrical conductivity of the activated carbon with graphite layers formed inside, its hierarchical pore structure which enhances lithium-ion transportation, and the carbon coating which alleviates the effects of volume changes, shortens the distance for Li(+) diffusion, facilitates the transmission of electrons, and keeps the structure stable."

Authors


  •   Li, Yao (external author)
  •   Zhu, Shenmin (external author)
  •   Liu, Qinglei (external author)
  •   Gu, Jiajun (external author)
  •   Guo, Zaiping
  •   Chen, Zhixin
  •   Feng, Chuanliang (external author)
  •   Zhang, Di (external author)
  •   Moon, Won-Jin (external author)

Publication Date


  • 2012

Citation


  • Li, Y., Zhu, S., Liu, Q., Gu, J., Guo, Z., Chen, Z., Feng, C., Zhang, D. & Moon, W. (2012). Carbon-coated SnO(2)@C with hierarchically porous structures and graphite layers inside for a high-performance lithium-ion battery. Journal of Materials Chemistry, 22 (6), 2766-2773.

Scopus Eid


  • 2-s2.0-84862972791

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/3614

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 2766

End Page


  • 2773

Volume


  • 22

Issue


  • 6

Place Of Publication


  • United Kingdom

Abstract


  • "A high-performance anode material was prepared from a hierarchically structured activated carbon which contains in situ graphene and nano-graphite. The activated carbon was immersed in a solution of SnCl(2)center dot 2H(2)O and subjected to ultrasound. As a result, nanoparticles of SnO(2) were uniformly deposited on the surface of the activated carbon. The composite material was then coated with a thin layer of carbon by soaking it in a sucrose solution, followed by carbonization of the adsorbed sucrose at 500 degrees C. The resulting composite showed an outstanding high-rate cycling performance that can deliver an initial discharge capacity of 1417 mAh g(-1) and maintain a discharge capacity of more than 400 mAh g(-1) after 100 cycles at a high current density of 1000 mA g(-1). This outstanding electrochemical performance is likely to be related to a unique combination of the excellent electrical conductivity of the activated carbon with graphite layers formed inside, its hierarchical pore structure which enhances lithium-ion transportation, and the carbon coating which alleviates the effects of volume changes, shortens the distance for Li(+) diffusion, facilitates the transmission of electrons, and keeps the structure stable."

Authors


  •   Li, Yao (external author)
  •   Zhu, Shenmin (external author)
  •   Liu, Qinglei (external author)
  •   Gu, Jiajun (external author)
  •   Guo, Zaiping
  •   Chen, Zhixin
  •   Feng, Chuanliang (external author)
  •   Zhang, Di (external author)
  •   Moon, Won-Jin (external author)

Publication Date


  • 2012

Citation


  • Li, Y., Zhu, S., Liu, Q., Gu, J., Guo, Z., Chen, Z., Feng, C., Zhang, D. & Moon, W. (2012). Carbon-coated SnO(2)@C with hierarchically porous structures and graphite layers inside for a high-performance lithium-ion battery. Journal of Materials Chemistry, 22 (6), 2766-2773.

Scopus Eid


  • 2-s2.0-84862972791

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/3614

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 2766

End Page


  • 2773

Volume


  • 22

Issue


  • 6

Place Of Publication


  • United Kingdom