FeCo bimetallic phosphide heterostructure for hydrogen production via sulfion oxidation assisted alkaline seawater splitting

and 0.717 V), representing a reduction of 1.181 V relative to that of traditional alkaline seawater electrolysis, while simultaneously achieving selective oxidation and recovery of sulfides. This work provides a promising route for low-energy hydrogen generation integrated with value-added sulfur conversion in complex alkaline seawater environments.