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Carbon-Encapsulated Sn at N-Doped Carbon Nanotubes as Anode Materials for Application in SIBs

Journal Article


Abstract


  • Carbon-encapsulated Sn@N-doped carbon tubes with submicron diameters were obtained via the simple reduction of C@SnO 2 @N-doped carbon composites that were fabricated by a hydrothermal approach. Sn nanoparticles encapsulated in carbon layers were distributed uniformly on the surfaces of the N-doped carbon nanotubes. The electrochemical performances of the composites were systematically investigated as anode materials in sodium-ion batteries (SIBs). The composite electrode could attain a good reversible capacity of 398.4 mAh g -1 when discharging at 100 mA g -1 , with capacity retention of 67.3% and very high Coulombic efficiency of 99.7% over 150 cycles. This good cycling performance, when compared to only 17.5 mAh g -1 delivered by bare Sn particles prepared via the same method without the presence of N-doped carbon, could be mainly ascribed to the uniform distribution of the precursor SnO 2 on the substrate of N-doped carbon tubes with three-dimensional structure, which provides more reaction sites to reduce the diffusion distance of Na + , further facilitating Na + -ion diffusion and relieves the huge volume expansion during charging/discharging. These outcomes imply that such a Sn/C composite would provide more options as an anode candidate for SIBs.

Authors


  •   Ruan, Boyang (external author)
  •   Guo, Haipeng (external author)
  •   Hou, Yuyang (external author)
  •   Liu, Qiannan (external author)
  •   Deng, Yuan-Fu (external author)
  •   Chen, Guohua (external author)
  •   Chou, Shulei
  •   Liu, Hua K.
  •   Wang, Jiazhao

Publication Date


  • 2017

Citation


  • Ruan, B., Guo, H., Hou, Y., Liu, Q., Deng, Y., Chen, G., Chou, S., Liu, H. & Wang, J. (2017). Carbon-Encapsulated Sn at N-Doped Carbon Nanotubes as Anode Materials for Application in SIBs. ACS Applied Materials and Interfaces, 9 (43), 37682-37693.

Scopus Eid


  • 2-s2.0-85032685711

Number Of Pages


  • 11

Start Page


  • 37682

End Page


  • 37693

Volume


  • 9

Issue


  • 43

Place Of Publication


  • United States

Abstract


  • Carbon-encapsulated Sn@N-doped carbon tubes with submicron diameters were obtained via the simple reduction of C@SnO 2 @N-doped carbon composites that were fabricated by a hydrothermal approach. Sn nanoparticles encapsulated in carbon layers were distributed uniformly on the surfaces of the N-doped carbon nanotubes. The electrochemical performances of the composites were systematically investigated as anode materials in sodium-ion batteries (SIBs). The composite electrode could attain a good reversible capacity of 398.4 mAh g -1 when discharging at 100 mA g -1 , with capacity retention of 67.3% and very high Coulombic efficiency of 99.7% over 150 cycles. This good cycling performance, when compared to only 17.5 mAh g -1 delivered by bare Sn particles prepared via the same method without the presence of N-doped carbon, could be mainly ascribed to the uniform distribution of the precursor SnO 2 on the substrate of N-doped carbon tubes with three-dimensional structure, which provides more reaction sites to reduce the diffusion distance of Na + , further facilitating Na + -ion diffusion and relieves the huge volume expansion during charging/discharging. These outcomes imply that such a Sn/C composite would provide more options as an anode candidate for SIBs.

Authors


  •   Ruan, Boyang (external author)
  •   Guo, Haipeng (external author)
  •   Hou, Yuyang (external author)
  •   Liu, Qiannan (external author)
  •   Deng, Yuan-Fu (external author)
  •   Chen, Guohua (external author)
  •   Chou, Shulei
  •   Liu, Hua K.
  •   Wang, Jiazhao

Publication Date


  • 2017

Citation


  • Ruan, B., Guo, H., Hou, Y., Liu, Q., Deng, Y., Chen, G., Chou, S., Liu, H. & Wang, J. (2017). Carbon-Encapsulated Sn at N-Doped Carbon Nanotubes as Anode Materials for Application in SIBs. ACS Applied Materials and Interfaces, 9 (43), 37682-37693.

Scopus Eid


  • 2-s2.0-85032685711

Number Of Pages


  • 11

Start Page


  • 37682

End Page


  • 37693

Volume


  • 9

Issue


  • 43

Place Of Publication


  • United States