PlumX Metrics
Embed PlumX Metrics

Highly efficient and robust catalysts for the hydrogen evolution reaction by surface nano engineering of metallic glass

Journal of Materials Chemistry A, ISSN: 2050-7496, Vol: 9, Issue: 9, Page: 5415-5424
2021
  • 43
    Citations
  • 0
    Usage
  • 17
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    43
    • Citation Indexes
      43
  • Captures
    17

Article Description

Efficiency and stability are the key parameters for the hydrogen evolution reaction (HER) of water electrolysis, and therefore developing effective and robust catalysts has been a long standing pursuit. In this work, we propose a flexible and universal strategy to synthesize catalysts with excellent HER catalytic performance. Following this strategy, we successfully fabricate a hybrid electrocatalyst by decorating Pt particles on a nano engineered metallic glass (MG) surface (Pt@MG NWs). The overpotential of the catalyst to achieve a geometric current density of 10 mA cmis 48.5 mV in 0.5 M HSO. Astonishingly, the Tafel slope is only 19.8 mV dec, smaller than that of commercial 10% Pt/C. The Pt@MG NWs exhibit excellent charge transport efficiency and contain around 3 times more active sites than 10% Pt/C. In addition, the Pt@MG NWs are ultra-stable, exhibiting no degradation after the HER at overpotentials of 48.5 mV and 84 mV for 20 hours. Furthermore, this catalyst shows enhanced catalytic performance when a large working current is applied at an overpotential of 200 mV for 500 hours. The hydrophilicity and aerophobicity of Pt@MG NWs, which originate from surface structural construction, are responsible for the outstanding HER catalytic performance. The calculations found that the hybrid electrocatalyst exhibits small Gibbs free energy and strong HO adsorption energy. Our results provide a novel and universal approach for designing superior HER catalysts with excellent activity and stability.

Bibliographic Details

Yuqiang Yan; Zhiyuan Huang; Jianan Fu; Zezhou Lin; Xi Zhang; Jiang Ma; Jun Shen; Chao Wang

Royal Society of Chemistry (RSC)

Chemistry; Energy; Materials Science

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know