High-Entropy Nanoalloys Show Promise as Efficient and Stable Catalysts for Electrochemical Ammonia Oxidation

Strategic Insights -

Researchers at Jiangsu University have made a breakthrough discovery in the field of nanotechnology, developing high-entropy nanoalloys that exhibit enhanced activity and stability as catalysts for electrochemical ammonia oxidation. According to a study published in the Journal of Electroanalytical Chemistry, the team used a two-staged solution-phase method to prepare reduced graphene oxide-supported PtRuFeCoNi high-entropy alloy (HEA) catalysts, which showed improved performance compared to traditional trimetallic alloys.

Key Takeaways:

  • The PtRuFeCoNi HEA catalyst exhibits enhanced activity with a lower onset potential of 0.42 V vs reversible hydrogen electrode and higher peak mass current density of 199.4 A gPt 1.
  • The catalyst also shows improved cycling stability and electrochemical durability compared to traditional trimetallic alloys.
  • The researchers attribute the improved performance to the unique high-entropy mixing state, elemental synergetic effect, and structural stability of the PtRuFeCoNi HEA.
  • The study demonstrates the potential of high-entropy nanoalloys as efficient and stable catalysts for electrochemical ammonia oxidation.
  • The research has been conducted under the financial support of the National Natural Science Foundation of China (NSFC).
  • The team also includes researchers from Jiangsu University, School of Materials Science and Engineering, led by Professor Yi Li.

Statistics:

  • The PtRuFeCoNi HEA catalyst exhibits a peak mass current density of 199.4 A gPt 1.
  • The onset potential of the catalyst is 0.42 V vs reversible hydrogen electrode.
  • The researchers reported that the catalyst shows improved cycling stability and electrochemical durability compared to traditional trimetallic alloys.
  • The study has been published in the Journal of Electroanalytical Chemistry, 2025; (995).
  • The Journal of Electroanalytical Chemistry is a peer-reviewed journal published by Elsevier Science Sa.

Sources:

  • NewsRx. Study Results from Jiangsu University Broaden Understanding of Nanoalloys (High-entropy Ptrufeconi Nanoalloys As Efficient and Stable Catalysts for Electrochemical Ammonia Oxidation). Nanotechnology Weekly. October 20, 2025; p 5316.
  • High-entropy Ptrufeconi Nanoalloys As Efficient and Stable Catalysts for Electrochemical Ammonia Oxidation. Journal of Electroanalytical Chemistry, 2025; 995.