期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 5, 期 37, 页码 19672-19679出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta05936a
关键词
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资金
- Australian Research Council (ARC) through ARC Discovery project [DP1093855]
- DECRA project [DE140100619]
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.
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