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A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
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Intermetallic Nanocrystals for Fuel-Cells-Based Electrocatalysis.

Fangxu Lin1,2, Menggang Li1, Lingyou Zeng1

  • 1School of Materials Science and Engineering, Peking University, Beijing 100871, China.

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|November 1, 2023
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Summary

Metallic nanocrystals are key electrocatalysts for sustainable energy. This review highlights advances in intermetallic nanocrystals, focusing on atomic-level engineering and applications in membrane electrode assemblies for improved electrocatalysis.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Electrocatalysis is crucial for sustainable energy solutions, relying heavily on metallic nanocrystals.
  • Intermetallic nanocrystals offer unique properties over disordered counterparts, driving research for enhanced catalytic performance.

Purpose of the Study:

  • To review recent advancements in intermetallic nanocrystals for electrocatalysis.
  • To discuss synthesis strategies, characterization techniques, and applications, particularly in membrane electrode assemblies (MEAs).

Main Methods:

  • Review of thermodynamic and kinetic fundamentals of electrocatalysis.
  • Analysis of synthetic strategies for controlled formation of intermetallic phases and nanostructures.
  • Discussion of state-of-the-art characterization methods for nanomaterials.

Main Results:

  • Precise atomic-level engineering of intermetallic nanocrystals is a growing trend.
  • Intermetallic nanomaterials show promise for advancing energy electrocatalysis.
  • Evaluation of intermetallic electrocatalysts in MEA setups, especially for oxygen reduction reactions.

Conclusions:

  • Significant progress has been made in intermetallic nanocrystal synthesis and application.
  • Further research is needed to address challenges and realize the full potential of intermetallic electrocatalysts in energy conversion devices.