articleNano-Micro LettersJan 16, 2026DIAMOND OA

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

Shenzhen University · Shenzhen Technology University · +1 more institution

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Abstract

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 VO 4 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…

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