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High-Entropy Alloy Nanomaterials with Well-Designed Nanostructures for Electrocatalytic Applications.

Keying Su1, Biao Huang1, Xinyao Fang1

  • 1Department of Materials Science & Engineering, Centre for Hydrogen Innovations, National University of Singapore, Singapore 117575, Singapore.

Nano Letters
|June 29, 2026
PubMed
Summary
This summary is machine-generated.

High-entropy alloy (HEA) nanomaterials show great potential as electrocatalysts. Structural engineering of these alloys is key to enhancing their performance and understanding structure-activity relationships for next-generation catalysts.

Keywords:
controlled synthesishigh-entropy alloystructural engineeringstructure−performance relationships, electrocatalysis

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • High-entropy alloy (HEA) nanomaterials offer unique compositional diversity and synergistic effects, making them promising electrocatalysts.
  • Engineering the structure of HEAs (facets, morphology, dimensions, crystal phases) is crucial for optimizing electrocatalytic performance.
  • Structural control in HEAs provides a platform for investigating structure-performance relationships in catalysis.

Purpose of the Study:

  • To review recent advances in the structural engineering of HEAs for electrocatalytic applications.
  • To emphasize the mechanisms of structure formation and the impact of structure on catalytic performance.
  • To discuss the challenges and future opportunities in designing advanced HEA electrocatalysts.

Main Methods:

  • Summarizing representative synthetic strategies for constructing well-defined HEA nanostructures.
  • Highlighting synthetic mechanisms of various HEA nanostructures.
  • Reviewing structure-dependent catalytic performance (activity, selectivity, durability).

Main Results:

  • Various synthetic strategies enable the engineering of HEA nanostructures with controlled facets, morphology, dimensions, and crystal phases.
  • Unique structural characteristics of HEA nanostructures significantly enhance electrocatalytic activity, selectivity, and durability.
  • Structure-formation mechanisms are elucidated, linking synthesis to final nanostructure properties.

Conclusions:

  • Rational structural engineering of HEAs is a powerful strategy to boost electrocatalytic performance.
  • Understanding structure-formation mechanisms is vital for designing high-performance HEA electrocatalysts.
  • Future research should focus on advanced HEA design for next-generation electrocatalytic applications.