Interlayer-bonded Ni/MoO2 electrocatalyst for efficient hydrogen evolution reaction with stability over 6000 h at 1000 mA cm−2

The mechanical stability of the catalytic electrodes used for hydrogen evolution reactions (HER) is crucial for their industrial applications in anion exchange membrane water electrolysis (AEM-WE). This study develops a corrosion strategy to construct a self-supported electrocatalyst (Int-Ni/MoO2) with high mechanical stability by anchoring the Ni/MoO2 catalytic layer with a dense interlayer of MoO2 nanoparticles. The Int-Ni/MoO2 exhibits a strengthened homostructural interface between the interlayer and catalytic layer, preventing the detachment of the catalyst during ultrasonic treatment. The blade-shaped catalytic layer reduces bubble shock and potential fluctuations at high current densities up to −6000 mA…

• WU
  Westlake University
• NN
  National Natural Science Foundation of China

  Award: 22088102
• CP
  China Postdoctoral Science Foundation

  Award: 2023M733175