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Locally Ordered Single-Atom Catalysts for Electrocatalysis.

Yujing Ren1,2, Jinyong Wang3, Mingyue Zhang1

  • 1Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585, Singapore.

Angewandte Chemie (International Ed. in English)
|November 7, 2023
PubMed
Summary

Locally ordered single-atom catalysts (LO-SACs) overcome limitations of single-atom catalysts by improving atom arrangement. This enhances electrocatalytic performance and reaction kinetics.

Keywords:
ElectrocatalysisElectronic StructureOrdered ArrangementReaction KineticsSingle-Atom Catalysts

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Single-atom catalysts (SACs) offer high atom efficiency but face challenges in loading density and site control.
  • Uncontrolled dispersion and support interactions limit the electrocatalytic performance of traditional SACs.

Purpose of the Study:

  • To review the characteristics, synthesis, characterization, and applications of locally ordered single-atom catalysts (LO-SACs).
  • To highlight how LO-SACs address limitations of randomly dispersed SACs for improved electrocatalysis.

Main Methods:

  • Review of existing literature on LO-SACs.
  • Discussion of synthetic strategies and characterization techniques for LO-SACs.
  • Analysis of LO-SACs' applications in electrocatalysis.

Main Results:

  • LO-SACs enable controlled arrangement of single atoms, influencing electronic effects and interatomic synergy.
  • This ordered structure enhances reaction kinetics, lowers energy barriers, and simplifies reaction mechanisms.
  • LO-SACs demonstrate superior electrocatalytic performance compared to randomly dispersed SACs.

Conclusions:

  • LO-SACs represent a significant advancement over traditional SACs.
  • Further research into LO-SACs promises to unlock new frontiers in electrocatalysis.
  • Addressing future challenges in LO-SAC development is crucial for practical applications.