In modern power systems, where the share of renewable energy sources is rapidly increasing, efficient storage of surplus generated energy is becoming critically important. Renewable energy production often does not coincide with real-time consumption needs. One of the most promising long-term energy storage solutions is the use of hydrogen, produced through water electrolysis. The chemical energy stored in hydrogen can be retained, transported, and later reconverted into electricity using fuel cells or thermal engines. Among the available technologies, proton exchange membrane electrolyzers (PEMEL) stand out due to their high energy efficiency and rapid dynamic response, making them especially suitable for integration with intermittent renewable sources.
This thesis focuses on the experimental analysis of the characteristics of a small proton exchange membrane electrolyzer stack. We analyzed the electrochemical properties of the Titan EZ240 stack. The measurements were conducted to determine the stack's fundamental characteristics and evaluate its performance. Finally, we summarize the obtained results and provide a reasoned interpretation to the stack’s operation.
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