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Fabrication of an MOF-derived heteroatom-doped Co/CoO/carbon hybrid with superior sodium storage performance for sodium-ion batteries

Journal Article


Abstract


  • Metal-organic frameworks (MOFs) have gained significant attention as precursors for the fabrication of porous hybrid materials due to their highly controllable composition, structure and pore size. However, at present, MOF-derived materials have rarely been investigated as anode materials for sodium-ion batteries. In this work, we report the fabrication of a Ni-doped Co/CoO/N-doped carbon (NC) hybrid using bimetallic Ni-Co-ZIF as the starting precursor. The resulting Ni-doped Co/CoO/NC hybrid is highly microporous with a high specific surface area of 552 m 2 g -1 . When employed as an anode material for sodium-ion batteries, the Ni-doped Co/CoO/NC hybrid exhibited both good rate performance with a high discharge capacit y of 218 mA h g -1 at a high current density of 500 mA g -1 and good cycling stability, as a high discharge capacity of 218.7 mA h g -1 can be retained after 100 cycles at 500 mA g -1 , corresponding to a high capacity retention of 87.5%. The excellent electrochemical performance of the Ni-doped Co/CoO/NC hybrid for SIBs may be attributed to the synergistic effects of various factors, including: (i) the presence of a carbon matrix which provides protection against aggregation and pulverization during sodiation/desodiation; (ii) the highly microporous nature along with the presence of a few mesopores which facilitates better insertion/de-insertion of Na + ions; (iii) the Ni-doping which introduces defect sites into the atomic structure of CoO via partial substitution, thus enhancing the conductivity of the cobalt oxide (CoO) component and hence, the overall hybrid material, and (iv) the N-doping which promotes a faster migration speed of sodium ions (Na + ) across the carbon layer by creating defect sites, thereby improving the conductivity of the carbon frameworks in the hybrid material.

Authors


  •   Kaneti, Yusuf (external author)
  •   Zhang, Jun (external author)
  •   He, Yan (external author)
  •   Wang, Zhijie (external author)
  •   Tanaka, Shunsuke (external author)
  •   Hossain, Md Shahriar
  •   Pan, Zheng (external author)
  •   Xiang, Bin (external author)
  •   Yang, Quan-Hong (external author)
  •   Yamauchi, Yusuke (external author)

Publication Date


  • 2017

Citation


  • Kaneti, Y., Zhang, J., He, Y., Wang, Z., Tanaka, S., Hossain, M., Pan, Z., Xiang, B., Yang, Q. & Yamauchi, Y. (2017). Fabrication of an MOF-derived heteroatom-doped Co/CoO/carbon hybrid with superior sodium storage performance for sodium-ion batteries. Journal of Materials Chemistry A, 5 (29), 15356-15366.

Scopus Eid


  • 2-s2.0-85026211089

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2653

Has Global Citation Frequency


Number Of Pages


  • 10

Start Page


  • 15356

End Page


  • 15366

Volume


  • 5

Issue


  • 29

Place Of Publication


  • United Kingdom

Abstract


  • Metal-organic frameworks (MOFs) have gained significant attention as precursors for the fabrication of porous hybrid materials due to their highly controllable composition, structure and pore size. However, at present, MOF-derived materials have rarely been investigated as anode materials for sodium-ion batteries. In this work, we report the fabrication of a Ni-doped Co/CoO/N-doped carbon (NC) hybrid using bimetallic Ni-Co-ZIF as the starting precursor. The resulting Ni-doped Co/CoO/NC hybrid is highly microporous with a high specific surface area of 552 m 2 g -1 . When employed as an anode material for sodium-ion batteries, the Ni-doped Co/CoO/NC hybrid exhibited both good rate performance with a high discharge capacit y of 218 mA h g -1 at a high current density of 500 mA g -1 and good cycling stability, as a high discharge capacity of 218.7 mA h g -1 can be retained after 100 cycles at 500 mA g -1 , corresponding to a high capacity retention of 87.5%. The excellent electrochemical performance of the Ni-doped Co/CoO/NC hybrid for SIBs may be attributed to the synergistic effects of various factors, including: (i) the presence of a carbon matrix which provides protection against aggregation and pulverization during sodiation/desodiation; (ii) the highly microporous nature along with the presence of a few mesopores which facilitates better insertion/de-insertion of Na + ions; (iii) the Ni-doping which introduces defect sites into the atomic structure of CoO via partial substitution, thus enhancing the conductivity of the cobalt oxide (CoO) component and hence, the overall hybrid material, and (iv) the N-doping which promotes a faster migration speed of sodium ions (Na + ) across the carbon layer by creating defect sites, thereby improving the conductivity of the carbon frameworks in the hybrid material.

Authors


  •   Kaneti, Yusuf (external author)
  •   Zhang, Jun (external author)
  •   He, Yan (external author)
  •   Wang, Zhijie (external author)
  •   Tanaka, Shunsuke (external author)
  •   Hossain, Md Shahriar
  •   Pan, Zheng (external author)
  •   Xiang, Bin (external author)
  •   Yang, Quan-Hong (external author)
  •   Yamauchi, Yusuke (external author)

Publication Date


  • 2017

Citation


  • Kaneti, Y., Zhang, J., He, Y., Wang, Z., Tanaka, S., Hossain, M., Pan, Z., Xiang, B., Yang, Q. & Yamauchi, Y. (2017). Fabrication of an MOF-derived heteroatom-doped Co/CoO/carbon hybrid with superior sodium storage performance for sodium-ion batteries. Journal of Materials Chemistry A, 5 (29), 15356-15366.

Scopus Eid


  • 2-s2.0-85026211089

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2653

Has Global Citation Frequency


Number Of Pages


  • 10

Start Page


  • 15356

End Page


  • 15366

Volume


  • 5

Issue


  • 29

Place Of Publication


  • United Kingdom