Ampere-scale anion exchange membrane water electrolysis (AEM-WE) is essential for a sustainable hydrogen economy but faces challenges due to limited efficient electrocatalysts. This article presents the development of a self-supported electrocatalyst (Int-Ni/MoO2) with high mechanical stability for the hydrogen evolution reaction (HER). Int-Ni/MoO2 demonstrated lower overpotential at high current densities, exceptional stability for over 6000 hours, and achieved a high current density of 7570 mA cm−2 with long-term stability of 1000 hours. The construction involved a corrosion strategy that enhanced catalytic activity by transferring bubble shock, reducing overpotential, and improving mass transfer. The electrode's structure and composition, including a dense interlayer, contributed to its mechanical stability, outperforming traditional NiMo/MoO2 electrodes. This innovation paves the way for sustainable and efficient hydrogen production in AEM-WE systems.