碱性溶液中镍掺杂二硫化钼的电催化析氢活性研究

his study employed ammonium molybdate and thiourea as molybdenum and sulfur sources, respectively, and nickel chloride hexahydrate as a nickel source. A green, simple, and energy-efficient one-step hydrothermal method was utilized to synthesize nickel-doped molybdenum disulfide spherical electrocatalysts. The prepared catalysts were characterized using FESEM, XRD, EDS, and other techniques. In an alkaline electrolyte (1M KOH), the impact of nickel doping on the electrocatalytic hydrogen evolution activity of the nickel-doped molybdenum disulfide catalysts was investigated using an electrochemical workstation (CHI 760E). The results showed that nickel doping effectively enhances the electrocatalytic activity of the catalysts, with the 2N-MS sample exhibiting the best catalytic activity. At a current density of 10 mA cm-2, it achieved an overpotential of 132 mV and a Tafel slope of 61 mV dec-1.?