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This review details advances in porous electrocatalysts for efficient water-splitting, crucial for green hydrogen production. Precise design of inorganic and organic materials optimizes oxygen evolution reaction (OER) performance.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Electrocatalysts are critical for efficient electrochemical water-splitting to produce green hydrogen.
  • The oxygen evolution reaction (OER) is a key bottleneck in water-splitting efficiency.
  • Porous electrocatalyst design is essential for optimizing OER performance.

Purpose of the Study:

  • To review advances in the precise design of inorganic- and organic-based porous electrocatalysts for OER.
  • To explore strategies for enhancing OER activity through chemical composition, nanostructure, and modifications.
  • To survey the current status of OER performance and identify challenges.

Main Methods:

  • Review of literature on porous electrocatalyst design strategies.
  • Analysis of the relationship between catalyst structure (porosity, composition) and OER activity.
  • Survey of modifications such as metal doping and organic molecule embedding.

Main Results:

  • Porous structures enhance active site accessibility and reactant diffusion for improved OER.
  • Tailoring chemical composition and framework modifications optimize binding energies and OER performance.
  • Progress in bifunctional catalysts for hydrogen evolution reaction (HER) and seawater utilization is highlighted.

Conclusions:

  • Precise design of porous electrocatalysts is key to advancing efficient water-splitting and green hydrogen production.
  • Further research is needed to overcome existing challenges and improve OER activity.
  • Porous electrocatalysts show promise for bifunctional applications and seawater electrolysis.