A Study Investigating Trends in Converting Hydrogen Energy to Electrical Power via Electrolysis with Reversible Fuel Cells

This research examines how hydrogen is converted into electrical energy through RFC, paying particular attention to the effects of different water types drinking, distilled, and mineral on electrolysis and energy production efficiency. Electrochemical analyses were performed at different current levels (ranging from 0.5 to 3.0 A) using graphical trend assessments, efficiency evaluations, and statistical analysis via one-way ANOVA. Drinking water exhibited the most linear correlation between voltage and energy (<tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\mathbf{R}^{\mathbf{2}}=\mathbf{0.995}$</tex>). In contrast, mineral water showed the highest average RFC efficiency at elevated currents, owing to its increased ionic conductivity. Due to its insufficient electrolyte content, distilled water exhibited greater variability and lower performance. Even though performance variations exist, statistical analyses (<tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\mathrm{p}&gt;0.05$</tex>) show that there is no significant difference in mean efficiency across the different types of water. The results underline that although the water composition affects RFC operation, other parameters might be more crucial for the system's performance. The results support the development of energy systems based on electrolysis by providing insights into the design and optimization of materials and operating conditions aimed at sustainable hydrogen power generation.