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CoMoO 4 enhanced anodized cobalt oxide nanotube as an efficient electrocatalyst for hydrogen evolution reaction

Applied Surface Science, ISSN: 0169-4332, Vol: 579, Page: 152128
2022
  • 14
    Citations
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  • 12
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Metrics Details

  • Citations
    14
    • Citation Indexes
      14
  • Captures
    12

Article Description

We fabricate Co 3 O 4 nanotube on Co foil (ACO) by using anode oxidation technique. Hydrangea-like CoMoO 4 is then prepared on the anodic cobalt oxide (ACO) matrix for enhancement of the catalytic activity towards hydrogen evolution reaction (HER). More importantly, the tubular structure of ACO not only allows more CoMoO 4 to grow, but also offers nucleating and growing sites for precursor of CoMoO 4, and thus forming fascicular CoMoO 4 nanosheets. Benefiting from the structural hierarchy and integrity of the electrode, the optimized catalyst exhibits an excellent HER activity with only 78 mV overpotential at −10 mA/cm 2 in alkaline solution. Additionally, the electrode displays good stability during the long-term reaction, over 28 h at constant current or constant voltage, exhibiting promising potential in hydrogen production via. water splitting.

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