Electrocatalytic Performance of NiSe Nanoparticles Doped ZIF-67 Derived Electrocatalyst for Hydrogen Evolution Reaction

Herein we report an electrocatalyst for hydrogen evolution reaction (HER) by using cobalt-based zeolite imidazolate framework (ZIF67) as a synthesized precursor, along with its composites using Ni and Se nanoparticles. The morphology and structure of the samples were studied by using FESEM analysis, XRD diffraction method, IR spectra, and BET analysis. The final composite with Ni and Se doped ZIF 67 shows an over potential of 114 mV at a current density of 10 mA cm^-2 and a Tafel slope of 46 mV dec^-1 compared to that of commercial Pt/C catalyst. The metal-metal interaction on the ZIF 67 frame work were found to serve as an active site. The co-doping producing a synergetic effect helps in enhancing the activity of the optimized catalyst.