Green Electrosynthesis Reaction of Potassium Azotetrazolium Salt Coupled by Hydrogen Production from Water Electrolysis by WS₂ Nano Sheets

As a four-electron multi-step reaction process with sluggish kinetics,oxygen evolution reaction(OER) limits the reaction rate and reduces the overall efficiency of overall water splitting. Replacing OER with the oxidation reaction of thermodynamically more favorable organic energetic materials and coupling with hydrogen evolution reaction(HER),so that the high value-added chemical products can be obtained while reducing the overall cell voltage to generate hydrogen. In this paper,a novel coupling system was proposed,in which the energy-containing ionic salt, potassium azotetrazolium salt(K(2)AZT),was prepared on the anode side,and carbon cloth-supported tungsten disulfide nanosheets(CC@WS2 NSs)were used as HER catalyst to promote the HER on the cathode side. The system only requires a cell voltage of 1.65 V to achieve a current density of 10 mA/cm(2),which is 220 mV lower than that of conventional electrolyzed water(1.87 V). In addition,the coupled system maintained smooth operation for at least 15 h, showing excellent stability. At the same time,the preparation of energetic compounds by green and safe electro-chemical method avoids the problems of high energy consumption,high risk and high cost of traditional organic synthesis method,and provides a new synthesis strategy for the safe production of energetic materials.