Recent Progress in Using Mesoporous Carbon Materials as Catalyst Support for Proton Exchange Membrane Fuel Cells

Area of Science:

• Materials Science
• Electrochemistry
• Catalysis

Background:

• Durable electrocatalysts are crucial for widespread proton exchange membrane fuel cell (PEMFC) adoption.
• Current catalysts suffer from poor durability due to oxidation and corrosion of traditional carbon supports.
• Platinum (Pt) nanoparticles integrated into highly graphitic mesoporous carbons offer enhanced stability.

Purpose of the Study:

• To reframe approaches for developing Pt alloy and mesoporous carbon-integrated ORR electrocatalysts.
• To improve the activity and long-term stability of PEMFCs.
• To align advanced catalyst materials with the demands of fuel cell vehicles, particularly heavy-duty applications.

Main Methods:

• Integration of platinum (Pt) nanoparticles into highly graphitic mesoporous carbons.
• Utilizing the synergistic effects between Pt alloys and heteroatom doping in mesoporous carbons.
• Optimizing surface area and electron transfer pathways within the hybrid material.

Main Results:

• Mesoporous carbon's structure enhances oxygen transport and graphitization ensures stability.
• Synergistic effects between Pt alloys and heteroatom-doped mesoporous carbon improve intrinsic activity and nanoparticle anchoring.
• Optimized Pt alloy integration reduces mass transport resistance by enhancing surface area and electron transfer.

Conclusions:

• Hybrid materials combining Pt alloys and mesoporous carbons offer a promising strategy for highly active and durable ORR electrocatalysts.
• These advanced catalysts significantly improve the performance and longevity of PEMFCs.
• The developed materials are well-suited for demanding applications like heavy-duty fuel cell vehicles.