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One-step growth of nitrogen-decorated iron-nickel sulfide nanosheets for the oxygen evolution reaction

Journal of Materials Chemistry A, ISSN: 2050-7496, Vol: 6, Issue: 14, Page: 5592-5597
2018
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Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    55
    • Citation Indexes
      55
  • Captures
    36

Article Description

The large overpotential loss of the oxygen evolution reaction (OER) is a major obstacle restricting the wide commercial application of water-splitting devices. Herein, we report one-step growth of nitrogen-decorated iron-nickel sulfide nanosheet arrays on a conductive Ni-Fe alloy foam (N-(Ni,Fe)S/NIF). It is noteworthy that N-(Ni,Fe)S/NIF has an ultra-low overpotential of 167 mV at 10 mA cm and exhibits the best OER performance among the non-precious electrocatalysts reported so far. Furthermore, N-(Ni,Fe)S/NIF shows nearly no degradation after a long-term OER test for 50 h at a constant current density of 10 mA cm. The superior catalytic activity and stability for the OER is due to the application of simultaneous regulation of specific morphologies, incorporation of Fe, and surface nitrogen-anion decoration on NiS materials. In addition, N-(Ni,Fe)S/NIF prepared by another method also shows excellent OER activity. This work will pave a new way to develop advanced electrocatalysts with a lower OER overpotential.

Bibliographic Details

Jin, Yanshuo; Yue, Xin; Du, Hongyu; Wang, Kai; Huang, Shangli; Shen, Pei Kang

Royal Society of Chemistry (RSC)

Chemistry; Energy; Materials Science

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