Pengaruh Daya Listrik Terhadap Produksi Hidrogen Dengan Metode Elektrolisis Air Alkali

Abstract

Global dependence on fossil fuels drives the search for cleaner alternative energy sources. Hydrogen (H₂) emerges as a prime
candidate due to its high energy density and versatile applications. One promising method for H₂ production is Alkaline Water
Electrolysis (AWE), which offers advantages such as relatively low cost, long lifespan, and simple operating conditions.
However, the efficiency of AWE remains limited due to energy losses from gas bubble formation and release. Key influencing
factors in AWE include the electrolyte, electrodes, membrane, electrode spacing, and electrical power. This study aims to
examine the effect of varying electrical power on the mass of H₂ produced in an electrolyzer cell with a fixed electrode spacing
of 8 cm and a KOH electrolyte concentration of 7%. The applied power variations were 0.01 W, 0.07 W, 0.09 W, 0.14 W, and
0.31 W. H₂ production was analyzed using MATLAB-based image processing. The results show that increasing electrical power
significantly enhances the mass of H₂ produced. The highest mass was obtained at 0.31 W, confirming the role of electric
current in determining the number of H₂ molecules in accordance with Faraday’s law. These findings highlight the importance
of optimizing operational parameters to improve the efficiency of AWE.