Pt-Based Ternary Intermetallic Nanostructures Advancing the Next Wave in Fuel Cell Electrocatalysts

Area of Science:

• Materials Science
• Electrochemistry
• Catalysis

Background:

• Platinum-based binary intermetallic materials are crucial for fuel cell electrocatalysis.
• Enhancing catalytic activity, durability, and phase stability is key for advanced fuel cell performance.
• Ternary compositions are emerging as a significant advancement in intermetallic electrocatalyst development.

Purpose of the Study:

• To present recent advances in the preparation and electrocatalysis of ternary intermetallic catalysts.
• To categorize and compare the performance of various classes of Pt-based ternary intermetallic catalysts.
• To highlight the advantages of ternary over binary compositions in electrocatalysis.

Main Methods:

• Classification of Pt-based ternary intermetallic catalysts into Pt-TM1-TM2, Pt-TM-pM, Pt-TM-X, and high-entropy systems.
• Systematic comparison of activity, durability, and ordering degree.
• Review of recent literature on preparation and electrocatalytic performance.

Main Results:

• Ternary intermetallic catalysts demonstrate enhanced catalytic activity and durability compared to binary counterparts.
• Different classes of ternary catalysts (e.g., Pt-TM1-TM2, Pt-TM-pM) exhibit varying performance characteristics.
• High-entropy intermetallic structures represent a promising area for further development.

Conclusions:

• Pt-based ternary intermetallic catalysts represent a significant leap forward in fuel cell electrocatalysis.
• Further research into ternary compositions is essential for developing next-generation high-performance electrocatalysts.
• Future directions include exploring novel ternary structures and optimizing existing ones for enhanced performance and stability.