2026/01/16 by Kai Liu, Yaohai Cai, Xiaotian Wei +5 · 1 voice · 1 citation
Energy · Engineering · #Advanced battery technologies research #Electrocatalysts for Energy Conversion #Hybrid Renewable Energy Systems
paper · pdf · doi:10.1007/s40820-026-02067-1
openalex publication_date 2026/01/16 · openalex created_date 2026/01/17 · openalex updated_date 2026/07/29
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 doping optimizes the hydrogen evolution pathway, enabling a low overpotential of 195 mV and >2350 h durability. When paired in a twso-electrode electrolyzer, the Ru-NiVLDH||Ir-NiVLDH system exhibits industrial-level performance and unprecedented robustness in alkaline seawater. This dual chloride confinement concept provides a general framework for catalyst design in corrosive ionic environments, extending beyond seawater splitting toward other electrochemical energy conversion processes.