Among the various pathways for green hydrogen production, alkaline water electrolysis stands out due to its technological maturity, scalability, and the widespread availability of materials used for electrode fabrication. To make green hydrogen more cost-competitive, it is essential to reduce capital costs while enhancing the efficiency, durability, and lifespan of the electrolyzer. A cost analysis of current systems shows that electrodes contribute to approximately 50% of the total cost. Therefore, developing efficient, affordable, and durable catalysts remains the key challenge for the large-scale commercialization of alkaline water electrolysis systems. In this work, an effort was made to develop functional cathode and anode materials for zero-gap alkaline water electrolysis. Ni foam and Ni mesh substrates were modified through galvanostatic electrodeposition of CoSn and NiFe alloys, through a method that is straightforward and easily scalable. To optimize the process for each substrate, the CoSn and NiFe alloys were deposited at various constant current densities. The resulting CoSn/Ni mesh cathodes were primarily tested for hydrogen evolution in 1 M KOH at room temperature to assess their catalytic activity. The best-performing samples were further evaluated in 30 wt% KOH at 70 °C in a zero-gap cell. The CoSn/Ni mesh cathode also underwent a 24-hour stability test in 1 M KOH at room temperature, exhibiting excellent retention of activity. CoSn-coated electrodes were characterized using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD). A similar approach was applied to NiFe/Ni foam anodes to evaluate their performance for the oxygen evolution reaction. In single-cell zero-gap tests using unmodified Ni foam and Ni mesh, voltages at 0.5 A cm⁻² ranged from 2.21 to 2.16 V. However, when these were replaced with CoSn- and NiFe-coated substrates, the voltage decreased to 1.86 V.