With the excessive use of fossil energy, the global energy crisis and environmental pollution are becoming increasingly serious, which forces the international community to develop environmentally friendly and sustainable new energy sources. Hydrogen energy has attracted widespread attention due to its many advantages such as high efficiency and no secondary pollution. Water electrolysis technology is considered to be one of the most ideal ways to produce green hydrogen. As an electrocatalyst for hydrogen evolution, MoS₂ has attracted the attention of researchers due to its good conductivity. In this paper, MoS₂ nanosheet arrays (MoS₂@Mo) were synthesized on the surface of molybdenum foil in a controlled manner by a one-step liquid-phase synthesis method. The lamellar nanosheet array structure significantly improved the packing phenomenon of MoS₂ nanosheets. This exposes more catalytically active sites at the edge of the MoS₂ lamellar and increases the contact area between the material and the electrolyte. Due to the good electrical conductivity of molybdenum foil, as well as its acid and alkaline resistance, MoS₂ nanosheet array materials are directly grown on the surface of molybdenum foil, which not only improves the electron transfer during the hydrogen evolution reaction, but also can be directly used as electrodes to catalyze hydrogen evolution reactions in acidic and alkaline environments. The electrochemical hydrogen evolution performance test shows that the synthesized MoS₂@Mo material has good catalytic activity and stability under both acidic and alkaline conditions, and the overpotentials of 142.5 mV and 40 mV are required when the current density reaches 10 mA.cm^-2, respectively.

Shi Zhang, Danya Lv, Lei Zhang. Synthesis of MoS₂ Nanoarray Materials and Electrocatalytic Performance for Hydrogen Evolution over a Wide pH Range. Academic Journal of Materials & Chemistry (2024) Vol. 5, Issue 3: 51-58. https://doi.org/10.25236/AJMC.2024.050308.

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