Sustainable energy development and the importance of air pollution and inhospitable climate have contributed to researching a novel and low-polluted energy. Hydrogen fuel has been well-known as one of the green energies to alter fossil fuels owing to clean production after burning and high efficiency. In this study, the 3-dimensional porous nanostructure of Ni-S is created by electrodeposition on nickel foam. Afterward, Ni-P was electrodeposited onto Ni-S, and the electrocatalytic behavior of the coated electrodes was evaluated in a 1M NaOH solution. Moreover, scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) were used to identify the characterization of the surface sample and the amount of chemical composition on that. Linear sweep voltammetry (LSV), electrochemical impedance spectrometry (EIS), and chronopotentiometry were used to evaluate the electrodes’ electrocatalysis area. The coating on a nickel-foam surface resulted in enhancing the result of HER. The best electrocatalysis activity has resulted in a Ni-S sample in the presence of 30 cycles of Ni-P and the Tafel slope was 25 mV dec-1, η10 = -70 mV, and η100 = -128.5 mV. Overall, this performance is related to a high surface area structure and interaction between Ni, S, and P. On the other hand, electrodes behaved well in durability after the chronopotentiometry test. In continuation, this study wants to justify the OER reaction instead of the UOR reaction. As an alternative to the UOR reaction, cell potential has decreased, which signifies the reduction of energy consumption to produce hydrogen.

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