Nitrogen-intercalated Pd metallene nanoribbons with optimized electronic structure for oxygen reduction catalysis

Area of Science:

• Materials Science
• Electrochemistry
• Nanotechnology

Background:

• Oxygen reduction reaction (ORR) is crucial for energy conversion devices.
• Developing efficient and stable electrocatalysts is essential for ORR.
• Palladium-based materials are explored for ORR catalysis, but stability and activity need improvement.

Purpose of the Study:

• To develop novel nitrogen-intercalated palladium metallene nanoribbons (N-Pd MNRs).
• To investigate the ORR performance of N-Pd MNRs in alkaline media.
• To understand the role of nitrogen intercalation in enhancing ORR activity and stability.

Main Methods:

• Synthesis of ultrathin nitrogen-intercalated palladium metallene nanoribbons.
• Electrochemical characterization of N-Pd MNRs for ORR performance.
• Analysis of electronic structure and binding interactions using theoretical insights.

Main Results:

• N-Pd MNRs exhibit favorable and stable ORR performance in alkaline electrolytes.
• The ultrathin nanoribbon structure maximizes exposed active sites.
• Nitrogen intercalation induces electronic interactions and lattice strain, optimizing the electronic structure and modulating intermediate binding.

Conclusions:

• Nitrogen intercalation is an effective strategy to enhance the ORR performance of palladium-based nanostructures.
• N-Pd MNRs represent a promising class of electrocatalysts for efficient ORR.
• The study provides insights into designing advanced metallene nanoribbons for catalysis.