Ni‐X (X = Cl, Br) Reaction Energy Barrier Regulation in Passive Film for Stable Oxygen Evolution Reaction in Alkaline Seawater

-induced lateral corrosion. As validation, a typical NiFe-LDH catalyst grown on a NiCr mesh exhibits over 15 times the stability of the same catalyst on a Ni mesh, achieving >2000 h of stability in concentrated seawater and >1000 h of stable operation at 60 °C in an industrial electrolyzer device.