An Interlayer Anchored NiMo/MoO 2 Electrocatalyst for Hydrogen Evolution Reaction in Anion Exchange Membrane Water Electrolysis at High Current Density

Abstract Noble metal‐free electrodes for anion exchange membrane water electrolysis (AEM‐WE) operating at high current densities are critical for sustainable hydrogen production. However, the massive amount of bubbles resulted in insufficient mass transfer and unevenly distributed local stress, which poses a major challenge in designing an efficient and robust hydrogen evolution catalyst. Herein, a facile chemical corrosion method is developed to synthesize an interlayer‐anchored NiMo/MoO 2 catalyst on a nickel foam (NF) substrate (NiMo/Int/NF) with high hydrogen evolution activity (overpotential of 80.2 ± 3.53 mV) and durability (stable for 5000 h) at 1000 mA cm −2 in 1 m KOH. The interlayer tightly anchors…

• CP
  China Postdoctoral Science Foundation

  Awards: 2023M733175, 2024T170812
• NK
  National Key Research and Development Program of China

  Award: 2022YFA0911902