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

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

2019/11/27 21:19:41 Zhao, Y. F., J. Q. Zhang, X. Guo, H. B. Fan, W. J. Wu, H. Liu and G. X. Wang

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.

Journal: Journal Of Materials Chemistry A
Volume: 5
Issue: 37
Pages: 19672-19679
ISSN: 2050-7488
DOI: 10.1039/c7ta05936a
Year: 2017
Number:
Type:

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