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Recent Advances in Co-Based Electrocatalysts for Hydrogen Evolution Reaction.

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Cobalt-based catalysts show promise for sustainable green hydrogen production via the hydrogen evolution reaction (HER). This review summarizes design strategies to enhance their performance for industrial applications.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Sustainable Energy

Background:

  • Green hydrogen generation via water splitting is crucial for sustainable energy.
  • Efficient and cost-effective catalysts for the hydrogen evolution reaction (HER) are needed.
  • Cobalt-based catalysts are promising non-precious metal alternatives.

Purpose of the Study:

  • To review the advances and design strategies for cobalt-based HER electrocatalysts.
  • To discuss the reaction mechanism and the role of cobalt in electrocatalysis.
  • To highlight strategies for enhancing catalyst performance.

Main Methods:

  • Review of recent literature on cobalt-based HER electrocatalysts.
  • Analysis of various design strategies to improve catalyst activity.
  • Discussion of structure-property relationships.

Main Results:

  • Various strategies like vacancy engineering, doping, and heterostructure construction enhance cobalt catalyst activity.
  • These strategies regulate electronic structure and optimize intermediate binding.
  • Advanced cobalt catalysts show significant performance improvements.

Conclusions:

  • Cobalt-based catalysts offer a viable path for efficient green hydrogen production.
  • Further research into design strategies is essential for industrialization.
  • Addressing fundamental and application-based challenges is key for future prospects.