Atomically Dispersed Mo–S Sites Boost NiFe–Layered Double Hydroxide for Industrial‐Level Seawater Electrolysis

ABSTRACT Seawater electrolysis has emerged as a promising pathway for sustainable hydrogen production. However, practical seawater electrolysis is hindered by Cl − ‐induced site blocking, corrosion, and competitive chlorine evolution. Thus electrocatalysts must achieve high OER currents below the chlorine evolution onset while maintaining structural and chemical stability in Cl − ‐rich environments. Although noble‐metal‐free NiFe–layered double hydroxide (LDH) is a promising catalyst for oxygen evolution reaction (OER), its practical application in seawater electrolysis remains limited due to its relatively higher overpotentials and Cl − ‐vulnerability. To overcome this challenge, we report a (Mo–S) 1 @NiFe–LDH, which incorporates atomically dispersed Mo–S sites within the NiFe–LDH lattice. Spectroscopic analyses confirm that the unique Mo–S coordination induces structural relaxation, lo…