Innovative Sub-nanometric High-Entropy Metallenes for Efficient Hydrogen Evolution
Key Ideas
- Development of sub-nanometric high-entropy metallenes for efficient hydrogen evolution reaction (HER).
- General one-pot wet-chemical strategy demonstrated small overpotentials, high mass activities, and superior stability over a broad pH range.
- Density functional theory calculations suggest optimal active centers for HER in different electrolyte environments.
- Innovative approach shows promise for addressing the challenges in Pt-based electrocatalysts and enhancing overall catalytic performance.
The article discusses the development of innovative sub-nanometric high-entropy metallenes (HEMs) for efficient hydrogen evolution reactions (HER). These HEMs, including quinary PdRhMoFeMn and other compositions, were synthesized using a one-pot wet-chemical strategy. The quinary HEMs showed small overpotentials, high mass activities, and superior stability across a wide pH range. Density functional theory (DFT) calculations indicated specific active centers for HER, such as Rh in acidic environments and Pd in neutral and alkaline electrolytes. This approach aims to overcome the limitations of Pt-based electrocatalysts, providing insights into improving catalytic performance in various electrolytic conditions. The innovative fabrication of sub-nanometric HEMs offers a promising solution for enhancing the efficiency and sustainability of hydrogen production.