Recent Progress in Nanostructured Catalysts for Sulfide Oxidation Reaction Coupled Water Electrolysis

Area of Science:

• Electrochemistry
• Materials Science
• Environmental Science

Background:

• Hydrogen production via water electrolysis is crucial for sustainable energy.
• Sulfide oxidation reaction (SOR) coupled with hydrogen evolution reaction (HER) offers a dual benefit of energy saving and wastewater treatment.
• Electrocatalyst performance is key to the efficiency of SOR-assisted water electrolysis.

Purpose of the Study:

• To provide a comprehensive review of recent advances in SOR-assisted water electrolysis.
• To emphasize nanostructure engineering strategies for high-performance electrocatalysts.
• To discuss emerging applications and future perspectives in the field.

Main Methods:

• Elucidation of fundamental mechanisms of SOR and HER, including intermediates, pathways, and kinetics.
• Systematic summarization of state-of-the-art electrocatalyst design strategies.
• Review of emerging applications like self-powered systems and seawater electrolysis.

Main Results:

• Nanostructure engineering strategies (single-atom design, vacancy engineering, doping, alloying, interfacial and surface engineering) significantly enhance electrocatalyst performance.
• These strategies modulate electronic structures and optimize adsorption for improved catalytic activity.
• SOR-assisted electrolysis demonstrates practical potential in self-powered hydrogen production and seawater electrolysis.

Conclusions:

• SOR-assisted water electrolysis is a promising technology for sustainable hydrogen production and wastewater treatment.
• Rational design of advanced electrocatalysts through nanostructure engineering is critical for further development.
• Continued research is needed to address challenges and unlock the full potential of SOR-related electrochemical technologies.