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Microstrain-engineered platinum nanoclathrins for fuel cells
Zhiyong Yu1, Qing Yao1, Chen Sun2,3
1State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
Summary
Researchers developed clathrin-mimetic noble metal nanostructures to overcome mass transport limitations in proton exchange membrane fuel cells (PEMFCs). These nanoclathrins significantly enhance catalyst performance and stability for clean energy applications.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Proton exchange membrane fuel cells (PEMFCs) are crucial for clean energy, but catalyst layer mass transport bottlenecks limit performance.
- Innovative catalyst nanostructuring is essential to address these limitations.
Purpose of the Study:
- To design and synthesize novel clathrin-mimetic noble metal nanostructures.
- To improve mass transport and catalytic activity in PEMFCs.
Main Methods:
- Selenium-induced self-assembly method to create clathrin-mimetic nanostructures with nanoporous shells and internal cavities.
- Microstrain engineering for performance fine-tuning of platinum nanoclathrins (Pt NCLs).
Main Results:
- Pt NCLs demonstrated enhanced mass transfer and optimized microstrain, functioning as efficient cathode and anode catalysts.
- Achieved high power densities (1.25 W cm⁻² in H₂/O₂ and 0.83 W cm⁻² in H₂/Air).
- Exhibited excellent stability, retaining 95.7% activity after 30,000 cycles.
Conclusions:
- Clathrin-like architecture with promoted mass transfer is significant for practical PEMFC devices.
- This nanostructuring strategy offers a pathway for advanced catalysts in sustainable energy applications.
