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Fe3C@nitrogen doped CNT arrays aligned on nitrogen functionalized carbon nanofibers as highly efficient catalysts for the oxygen evolution reaction

Journal Article


Abstract


  • Fe3C based catalysts are found to be one of the most promising electrocatalysts for the oxygen evolution reaction (OER). Herein, we report on a nanoarchitectured material composed of Fe3C nanoparticles encapsulated at the tip of nitrogen-enriched carbon nanotubes (NCNTs), which are aligned on one dimensional (1D) nitrogen-doped carbon nanofibers (Fe3C@NCNTs-NCNFs) by a scalable electrospinning technique, as a high performance OER catalyst. The unique 3D hierarchical architecture of Fe3C@NCNTs-NCNFs leads to highly exposed active sites, enhanced electron transfer properties and strong synergistic coupled effects. Fe3C@NCNTs-NCNFs exhibit an outstanding catalytic performance with a high current density (10 mA cm-2 at an overpotential of 284 mV), a low Tafel slope (56 mV dec-1), a low charge transfer resistance and strong durability in 1 M KOH solution. The electrochemical evaluation demonstrates that the Fe3C@NCNTs-NCNF composite is a promising electrocatalyst for the OER in alkaline solution.

UOW Authors


  •   Wang, Guoxiu (external author)

Publication Date


  • 2017

Citation


  • Zhao, Y., Zhang, J., Guo, X., Fan, H., Wu, W., Liu, H., & Wang, G. (2017). Fe3C@nitrogen doped CNT arrays aligned on nitrogen functionalized carbon nanofibers as highly efficient catalysts for the oxygen evolution reaction. Journal of Materials Chemistry A, 5(37), 19672-19679. doi:10.1039/c7ta05936a

Scopus Eid


  • 2-s2.0-85030122992

Start Page


  • 19672

End Page


  • 19679

Volume


  • 5

Issue


  • 37

Abstract


  • Fe3C based catalysts are found to be one of the most promising electrocatalysts for the oxygen evolution reaction (OER). Herein, we report on a nanoarchitectured material composed of Fe3C nanoparticles encapsulated at the tip of nitrogen-enriched carbon nanotubes (NCNTs), which are aligned on one dimensional (1D) nitrogen-doped carbon nanofibers (Fe3C@NCNTs-NCNFs) by a scalable electrospinning technique, as a high performance OER catalyst. The unique 3D hierarchical architecture of Fe3C@NCNTs-NCNFs leads to highly exposed active sites, enhanced electron transfer properties and strong synergistic coupled effects. Fe3C@NCNTs-NCNFs exhibit an outstanding catalytic performance with a high current density (10 mA cm-2 at an overpotential of 284 mV), a low Tafel slope (56 mV dec-1), a low charge transfer resistance and strong durability in 1 M KOH solution. The electrochemical evaluation demonstrates that the Fe3C@NCNTs-NCNF composite is a promising electrocatalyst for the OER in alkaline solution.

UOW Authors


  •   Wang, Guoxiu (external author)

Publication Date


  • 2017

Citation


  • Zhao, Y., Zhang, J., Guo, X., Fan, H., Wu, W., Liu, H., & Wang, G. (2017). Fe3C@nitrogen doped CNT arrays aligned on nitrogen functionalized carbon nanofibers as highly efficient catalysts for the oxygen evolution reaction. Journal of Materials Chemistry A, 5(37), 19672-19679. doi:10.1039/c7ta05936a

Scopus Eid


  • 2-s2.0-85030122992

Start Page


  • 19672

End Page


  • 19679

Volume


  • 5

Issue


  • 37