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Ni/NiMO (M = Mn or Fe) supported on N-doped carbon nanotubes as trifunctional electrocatalysts for ORR, OER and HER

Catalysis Science and Technology, ISSN: 2044-4761, Vol: 9, Issue: 7, Page: 1595-1601
2019
  • 87
    Citations
  • 0
    Usage
  • 43
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    87
    • Citation Indexes
      87
  • Captures
    43

Article Description

Rationally designed and synthesized non-noble metal-based multifunctional electrocatalysts with outstanding activity and durability for oxygen evolution reaction (OER), hydrogen evolution reaction (HER), and oxygen reduction reaction (ORR) are critical to the commercialization of energy-related devices. Herein, two trifunctional electrocatalysts composed of Ni-NiMO (M = Mn or Fe) supported on N-doped carbon nanotubes (NCNT) were in situ synthesized by pyrolysis of NiMn- and NiFe-based precursors, respectively, under a NH/Ar atmosphere. The hybrids exhibit robust trifunctional catalytic performance for HER, OER and ORR in an alkaline electrolyte. Especially, NCNT/Ni-NiMnO exhibits excellent performance for zinc-air batteries with a high specific capacity of 502 mA h g and a maximum power density of 105 mW cm, comparable to that of the Pt/C-based zinc-air battery. This study provides a feasible strategy for preparing highly efficient trifunctional electrocatalysts by in situ coupling metal/metal spinel oxide composites with high conductivity nanocarbon.

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