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Recent advances in amorphous electrocatalysts for oxygen evolution reaction.

Jinkyu Park1, Seonggyu Lee2, Seongseop Kim3

  • 1Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea.

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|October 14, 2022
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Amorphous electrocatalysts show enhanced performance for the oxygen evolution reaction (OER), crucial for green hydrogen production. This review covers their preparation, progress, and future outlook for efficient energy applications.

Keywords:
amorphous electrocatalystsamorphous materialelectrolysisoxygen evolution reactionwater splitting

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Renewable Energy

Background:

  • The oxygen evolution reaction (OER) is vital for electrochemical water splitting and green hydrogen production.
  • Current limitations in OER technology stem from the lack of highly efficient and stable electrocatalysts.
  • Amorphous materials offer advantages over crystalline counterparts due to increased active sites and structural flexibility.

Purpose of the Study:

  • To review preparation methods for amorphous electrocatalysts.
  • To summarize recent advancements in amorphous OER electrocatalysts for acidic and alkaline media.
  • To discuss challenges and future directions for amorphous OER electrocatalyst development.

Main Methods:

  • Review of literature on amorphous material synthesis (oxides, hydroxides, phosphides, sulfides, composites).
  • Analysis of performance data for amorphous OER electrocatalysts in various electrolytes.
  • Discussion of structure-property relationships in amorphous electrocatalysts.

Main Results:

  • Amorphous materials demonstrate superior OER performance compared to crystalline materials.
  • Diverse preparation strategies yield amorphous electrocatalysts with tunable properties.
  • Amorphous electrocatalysts show promise in both acidic and alkaline environments.

Conclusions:

  • Amorphous electrocatalysts are promising for efficient and stable OER.
  • Further research into rational design and synthesis is needed.
  • This review provides guidance for developing high-performance amorphous OER electrocatalysts for future energy applications.