Comprehensive Experimental Design of Preparation and Electrocatalytic Hydrogen Production Performance of Ionic Nickel Complex

By refining scientific research results, the nickel complex with electrocatalytic hydrogen production activity was introduced into the comprehensive innovative experimental teaching of undergraduate. An ionic nickel(II) complex (Ni(bpy)₃Ni(mnt)₂) was prepared using 2,2'-bipyridine (bpy), 1, 2-dicyano-1,2' -dithiolene (mnt) and nickel chloride as raw materials. The complex was characterized by single crystal X-ray diffraction, infrared spectrum, electrospray ionization mass spectrometry, and ultraviolet-visible spectrum. The properties of electrocatalytic hydrogen production in organic phase and aqueous phase are systematically investigated. The results show that in a phosphate buffer solution with a low potential of −1.15 V, the amount of electrocatalytic hydrogen production of the complex in 4 hours was 0.386 mmol, and the TON is 2922.13 and the complex remains very good stability. This experimental project has simple synthesis steps, cutting-edge and comprehensiveness, covers many knowledge points and experimental technologies, which helps to establish green and low-carbon idea and cultivate students' innovation ability and scientific research ability.