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An Integrated Free-Standing Flexible Electrode with Holey-Structured 2D Bimetallic Phosphide Nanosheets for Sodium-Ion Batteries

Journal Article


Abstract


  • An integrated, free-standing, and binder-free type of flexible anode electrode is fabricated from numerous holey-structured, 2D nickel-based phosphide nanosheets connected with carbon nanotubes. This electrode architecture can not only uniformly disperse the nanosheets throughout the whole electrode to avoid aggregation or detachment, but also provide an ideal sodium ion and electrolyte diffusion and penetration network with high electronic conductivity. Meanwhile, bimetallic phosphide formation by introducing secondary metal species will lead to a synergistic effect to modify the electrochemical properties. Due to the excellent compositional and structural characteristics of this electrode, it delivers superior performance. This designed flexible anode with Ni 1.5 Co 0.5 P x nanosheets demonstrates a reversible capacity of 496.4 mAh g -1 at 0.5 C and a good rate capacity of 276.1 mAh g -1 at 8 C. Meanwhile, this connected integrated network woven from carbon nanotubes can effectively restrain volumetric expansion and shrinkage, and affect the conversion reaction products formation as well, from large-sized microspheres to film structure, which is primarily credited with the improvement in electrochemical performance. This work may open up a new path for the synthesis of morphology-controlled phosphides and promote the further development of flexible devices.

Authors


  •   Wang, Xiaowei (external author)
  •   Guo, Haipeng (external author)
  •   Liang, Ji
  •   Zhang, Jia (external author)
  •   Zhang, Bao Hua J. (external author)
  •   Wang, Jiazhao
  •   Luo, Wenbin (external author)
  •   Liu, Hua K.
  •   Dou, Shi Xue

Publication Date


  • 2018

Citation


  • Wang, X., Guo, H., Liang, J., Zhang, J., Zhang, B., Wang, J., Luo, W., Liu, H. & Dou, S. (2018). An Integrated Free-Standing Flexible Electrode with Holey-Structured 2D Bimetallic Phosphide Nanosheets for Sodium-Ion Batteries. Advanced Functional Materials, 28 (26), 1801016-1-1801016-9.

Scopus Eid


  • 2-s2.0-85046821368

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3165

Start Page


  • 1801016-1

End Page


  • 1801016-9

Volume


  • 28

Issue


  • 26

Place Of Publication


  • Germany

Abstract


  • An integrated, free-standing, and binder-free type of flexible anode electrode is fabricated from numerous holey-structured, 2D nickel-based phosphide nanosheets connected with carbon nanotubes. This electrode architecture can not only uniformly disperse the nanosheets throughout the whole electrode to avoid aggregation or detachment, but also provide an ideal sodium ion and electrolyte diffusion and penetration network with high electronic conductivity. Meanwhile, bimetallic phosphide formation by introducing secondary metal species will lead to a synergistic effect to modify the electrochemical properties. Due to the excellent compositional and structural characteristics of this electrode, it delivers superior performance. This designed flexible anode with Ni 1.5 Co 0.5 P x nanosheets demonstrates a reversible capacity of 496.4 mAh g -1 at 0.5 C and a good rate capacity of 276.1 mAh g -1 at 8 C. Meanwhile, this connected integrated network woven from carbon nanotubes can effectively restrain volumetric expansion and shrinkage, and affect the conversion reaction products formation as well, from large-sized microspheres to film structure, which is primarily credited with the improvement in electrochemical performance. This work may open up a new path for the synthesis of morphology-controlled phosphides and promote the further development of flexible devices.

Authors


  •   Wang, Xiaowei (external author)
  •   Guo, Haipeng (external author)
  •   Liang, Ji
  •   Zhang, Jia (external author)
  •   Zhang, Bao Hua J. (external author)
  •   Wang, Jiazhao
  •   Luo, Wenbin (external author)
  •   Liu, Hua K.
  •   Dou, Shi Xue

Publication Date


  • 2018

Citation


  • Wang, X., Guo, H., Liang, J., Zhang, J., Zhang, B., Wang, J., Luo, W., Liu, H. & Dou, S. (2018). An Integrated Free-Standing Flexible Electrode with Holey-Structured 2D Bimetallic Phosphide Nanosheets for Sodium-Ion Batteries. Advanced Functional Materials, 28 (26), 1801016-1-1801016-9.

Scopus Eid


  • 2-s2.0-85046821368

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3165

Start Page


  • 1801016-1

End Page


  • 1801016-9

Volume


  • 28

Issue


  • 26

Place Of Publication


  • Germany