Hydrogen Peroxide Electrosynthesis From Seawater

Abstract

Hydrogen peroxide (H₂O₂) electrosynthesis via a two-electron oxygen reduction reaction (2e^– ORR) from seawater holds a promising perspective for the marine economy. However, the competitive 4e^– ORR pathway and high concentration of Cl^– in seawater pose great challenges. Recently, Zhang et al. developed high-performance electrocatalysts based on NiPS₃ nanosheets for efficient H₂O₂ production from seawater. The seawater electrolysis system based on NiPS₃ enables large-scale production of H₂O₂, which can be applied to wastewater degradation, biomass valorization, and agricultural fields. This finding facilitates the sustainable conversion of seawater into high-value products.

Keywords

electrosynthesis / hydrogen peroxide / seawater electrolysis / two-electron oxygen reduction reaction

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RIGHTS & PERMISSIONS

2025 The Author(s). SmartMat published by Tianjin University and John Wiley & Sons Australia, Ltd.