Preparation and characterization of Ni modified MoS2 for electrocatalytic hydrogen evolution

Developing highly active and low cost hydrogen evolution electrocatalysts is an imminent task to improve the efficiency of water electrolysis hydrogen production, achieve large-scale hydrogen production, and promote the development and utilization of hydrogen energy. Molybdenum disulfide (MoS2) has shown a certain potential in the field of hydrogen evolution catalysis, and its modification to improve the catalytic activity and replace the platinum-based catalyst has become a research hotspot in recent years. A simple one-step solvothermal method was used to successfully synthesize a Ni-doped electrocatalytic hydrogen evolution (HER) catalyst Ni@MoS2, which had excellent electrocatalytic hydrogen evolution activity and good stability. The 20Ni@MoS2 as prepared at 240 ℃ exhibited better HER performance with a low overpotential of 190 mV at 10 mA/cm2 and Tafel slope of 162 mV/dec in acidic medium. © 2023 Science Press. All rights reserved.