▎ 摘　　要

NOVELTY - A fully-hydrolyzed hydroelectric vanadium (V) nickel (Ni) iron(III) nitride (FeN) graphene tube (GT) catalyst (V-Ni3FeN/Ni-N-GTs) constructed based on doping and heterojunction strategy is prepared by hydrothermal and nitriding method, obtaining the fully- hydrolyzed hydroelectric catalyst comprised of V- doped Ni-iron(III) nitride (Ni3FeN) and Ni-nano-particles grown on the nitrogen-doped graphene tube in situ. USE - Fully-hydrolyzed hydroelectric catalyst for hydrogen evolution and oxygen evolution reaction. ADVANTAGE - The fully-hydrolyzed hydroelectric catalyst exhibits excellent electro-catalysis performance in the alkaline medium, and excellent stability. DETAILED DESCRIPTION - Fully-hydrolyzed hydroelectric vanadium (V) nickel (Ni) iron(III) nitride (FeN) graphene tube (GT) catalyst (V-Ni3FeN/Ni-N-GTs) constructed based on doping and heterojunction strategy is prepared by hydrothermal and nitriding method, obtaining the fully- hydrolyzed hydroelectric catalyst composed of V- doped Ni-iron(III) nitride (Ni3FeN) and Ni-nano particles grown on the nitrogen-doped graphene tube in situ, where it is specially prepared by weighing 4 mmol ammonium fluoride(NH4F), 8 mmol carbamide (CH4N2O) and proper trisodium vanadate (Na3VO4)dissolved in 70 mL distilled water, according to mol ratio of 5:1, weighing 2 mmol nickel nitrate and ferric nitrate, dissolving in the solution, transferring to the reaction kettle, and dipping the nitrogen-doped graphene tube grown on the graphite sheet into the reaction kettle, carrying out hydrothermal reaction, reaction temperature is 120℃ the reaction time is 6 hours, then washing, drying the product to obtain the V-doped (NiFe) precursor loaded on the nitrogen-doped graphene tube, putting the product into a tubular furnace heating to a set temperature in the argon atmosphere, closing the argon gas, and at the set temperature, introducing ammonia for a certain time, cooling to room temperature to obtain the fully-hydrolyzed hydroelectric catalyst (V-Ni3FeN/Ni-N-GTs). DESCRIPTION OF DRAWING(S) - The drawing shows an scanning electron microscope (SEM) photograph of the full hydrolysis catalyst.