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A high strength, free-standing cathode constructed by regulating graphitization and the pore structure in nitrogen-doped carbon nanofibers for flexible lithium-sulfur batteries

Journal Article


Abstract


  • We demonstrate here a novel strategy to prepare a flexible and free-standing sulfur cathode with improved mechanical strength, the matrix of which is constructed from graphitized nitrogen-doped mesoporous carbon nanofibers (NPCFs). Benefiting from a unique micro/mesoporous structure and highly graphitic carbon, the NPCF film is capable of accommodating more sulfur, and maintains substantially higher mechanical strength and flexibility after sulfur loading as compared with traditional microporous carbon nanofiber films. As a free-standing and flexible cathode for Li–S batteries, the robust composite film exhibits excellent rate capability (540 mA h g−1 at 5C) and cycling stability (76.5% retention after 500 cycles at 5C).

Authors


  •   Song, Xiong (external author)
  •   Wang, Suqing (external author)
  •   Bao, Yue (external author)
  •   Liu, Guoxue (external author)
  •   Sun, Wenping
  •   Ding, Liang-Xin (external author)
  •   Liu, Hua K.
  •   Wang, Haihui (external author)

Publication Date


  • 2017

Citation


  • Song, X., Wang, S., Bao, Y., Liu, G., Sun, W., Ding, L., Liu, H. & Wang, H. (2017). A high strength, free-standing cathode constructed by regulating graphitization and the pore structure in nitrogen-doped carbon nanofibers for flexible lithium-sulfur batteries. Journal of Materials Chemistry A, 5 (15), 6832-6839.

Scopus Eid


  • 2-s2.0-85017614790

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2485

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 6832

End Page


  • 6839

Volume


  • 5

Issue


  • 15

Place Of Publication


  • United Kingdom

Abstract


  • We demonstrate here a novel strategy to prepare a flexible and free-standing sulfur cathode with improved mechanical strength, the matrix of which is constructed from graphitized nitrogen-doped mesoporous carbon nanofibers (NPCFs). Benefiting from a unique micro/mesoporous structure and highly graphitic carbon, the NPCF film is capable of accommodating more sulfur, and maintains substantially higher mechanical strength and flexibility after sulfur loading as compared with traditional microporous carbon nanofiber films. As a free-standing and flexible cathode for Li–S batteries, the robust composite film exhibits excellent rate capability (540 mA h g−1 at 5C) and cycling stability (76.5% retention after 500 cycles at 5C).

Authors


  •   Song, Xiong (external author)
  •   Wang, Suqing (external author)
  •   Bao, Yue (external author)
  •   Liu, Guoxue (external author)
  •   Sun, Wenping
  •   Ding, Liang-Xin (external author)
  •   Liu, Hua K.
  •   Wang, Haihui (external author)

Publication Date


  • 2017

Citation


  • Song, X., Wang, S., Bao, Y., Liu, G., Sun, W., Ding, L., Liu, H. & Wang, H. (2017). A high strength, free-standing cathode constructed by regulating graphitization and the pore structure in nitrogen-doped carbon nanofibers for flexible lithium-sulfur batteries. Journal of Materials Chemistry A, 5 (15), 6832-6839.

Scopus Eid


  • 2-s2.0-85017614790

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2485

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 6832

End Page


  • 6839

Volume


  • 5

Issue


  • 15

Place Of Publication


  • United Kingdom