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Co9S8@carbon nanospheres as high-performance anodes for sodium ion battery

Journal Article


Abstract


  • Co 9 S 8 @C nanospheres with a 5 nm carbon shell and 50 nm Co 9 S 8 core have been synthesized by a facile hydrothermal method followed by an annealing process. The electrochemical results indicate that the Co 9 S 8 @C nanospheres are an excellent anode material for sodium ion batteries. They deliver a specific capacity of 305 mA h g −1 after 1000 cycles at current density of 5 A g −1 and a high specific capacity of 405 mA h g −1 at current density of 500 mA g −1 . The good cycling performance and rate capability are attributed to the synergistic effects of the carbon shell and the ultra-small size of Co 9 S 8 , which can enhance the electrical conductivity of the composite, as well as resisting the strain caused by repeated charge/discharge processes.

Authors


  •   Zhang, Yaohui (external author)
  •   Wang, Nana
  •   Xue, Pan (external author)
  •   Liu, Yuanlin (external author)
  •   Tang, Bin (external author)
  •   Bai, Zhongchao (external author)
  •   Dou, Shi Xue

Publication Date


  • 2018

Citation


  • Zhang, Y., Wang, N., Xue, P., Liu, Y., Tang, B., Bai, Z. & Dou, S. (2018). Co9S8@carbon nanospheres as high-performance anodes for sodium ion battery. Chemical Engineering Journal, 343 512-519.

Scopus Eid


  • 2-s2.0-85043460990

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3004

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 512

End Page


  • 519

Volume


  • 343

Place Of Publication


  • Netherlands

Abstract


  • Co 9 S 8 @C nanospheres with a 5 nm carbon shell and 50 nm Co 9 S 8 core have been synthesized by a facile hydrothermal method followed by an annealing process. The electrochemical results indicate that the Co 9 S 8 @C nanospheres are an excellent anode material for sodium ion batteries. They deliver a specific capacity of 305 mA h g −1 after 1000 cycles at current density of 5 A g −1 and a high specific capacity of 405 mA h g −1 at current density of 500 mA g −1 . The good cycling performance and rate capability are attributed to the synergistic effects of the carbon shell and the ultra-small size of Co 9 S 8 , which can enhance the electrical conductivity of the composite, as well as resisting the strain caused by repeated charge/discharge processes.

Authors


  •   Zhang, Yaohui (external author)
  •   Wang, Nana
  •   Xue, Pan (external author)
  •   Liu, Yuanlin (external author)
  •   Tang, Bin (external author)
  •   Bai, Zhongchao (external author)
  •   Dou, Shi Xue

Publication Date


  • 2018

Citation


  • Zhang, Y., Wang, N., Xue, P., Liu, Y., Tang, B., Bai, Z. & Dou, S. (2018). Co9S8@carbon nanospheres as high-performance anodes for sodium ion battery. Chemical Engineering Journal, 343 512-519.

Scopus Eid


  • 2-s2.0-85043460990

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3004

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 512

End Page


  • 519

Volume


  • 343

Place Of Publication


  • Netherlands