Dual Chloride Confinement in Noble Metal-Doped NiV LDH Catalysts Enables Stable Industrial-Level Seawater Electrolysis.

ABSTRACT: Seawater electrolysis is an appealing route toward sustainable hydrogen production, yet its practical deployment is hindered by severe chloride-induced corrosion and parasitic chlorine oxidation. Here, we report noble metal-doped NiV layered double hydroxides (LDHs) that integrate electronic modulation with a dual chloride confinement mechanism. Ir incorporation simultaneously establishes strong Ir-Cl coordination and dynamically regenerated VO₄^3- layers, producing an adaptive electrostatic shield that effectively suppresses chloride penetration. As a result, Ir-NiV LDH delivers nearly 100% oxygen evolution reaction selectivity and outstanding stability over 2750 h at 500 mA cm^-2. Meanwhile, Ru doping optimizes the hydrogen evolution pathway, enabling a low

SUBMITTER: Liu K 

PROVIDER: S-EPMC12811202 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature