With the increasing use of fossil energy, environmental pollution are becoming very serious. Therefore, it’s urgent to develop clean, and sustainable energy conversion and storage technologies [1]. Producing hydrogen and oxygen by water electrolysis has many advantages, which is considered to be one of the most likely methods to replace the fossil energy [2]. However, the electrolysis of water to produce H2 and O2 requires overcoming a high inherent potential. So, it’s necessary to design and prepare a low-cost and efficient electrocatalyst to reduce the over-potential of water electrolysis. MOF is a kind of nanoporous material with high specific surface area, variable pore structure, and structural diversity that has great application prospects in HER and OER [3]. For mentioned reason, in this study, MOF-Chitosan-Cs growing on NFF was prepared through a simple method. Electrochemical tests showed that the catalyst M-C-Cs@NF can perform OER and HER at current densities of 10 mA cm−2 only needing an overpotential of 130 mV and 160 mV, respectively. The catalytic kinetic was calculated by Tofel Slope according to the Tofel equation. Tofele Slope iscaculated 89 and 84 mV. Dec-1 fore HER and OER, respectively, showin Volmer-Hyrovsky process. Moreover, Cdl was investigated inoder to obtained ESCA, a paramater for investigation of catalysts performance. Cdl for HER and OER was Calculated 7.0 and 8.4 mF. cm-1, respectively.We think the MOFs growth on nickel–iron foam improves the conductivity and stability of the cell and using of niobium benefits exposing more active sites and enhances the synergistic interaction.
