An Analytical Study of Fuel Cell Technologies for Green Energy Generation
DOI:
https://doi.org/10.70112/ajes-2025.14.1.4258Keywords:
Fuel cells, Hydrogen energy, PEMFC, Efficiency, Power generationAbstract
Fuel cells provide a sustainable and efficient power generation option, serving as an alternative to traditional energy systems dependent on fossil fuels. This research presents a detailed evaluation of prominent fuel cell technologies, including Polymer Electrolyte Membrane Fuel Cells (PEMFCs), Solid Oxide Fuel Cells (SOFCs), Alkaline Fuel Cells (AFCs), Phosphoric Acid Fuel Cells (PAFCs), Molten Carbonate Fuel Cells (MCFCs), Direct Methanol Fuel Cells (DMFCs), High-Temperature PEMFCs (HT-PEMFCs), and Direct Carbon Fuel Cells (DCFCs), for electricity generation using clean hydrogen as the primary fuel source. The evaluation focuses on key performance indicators such as efficiency, operating temperature, power density, fuel flexibility, and material requirements. The analysis reveals that PEMFCs exhibit superior overall performance, largely due to their efficient operation at lower temperatures, compact structure, and rapid startup, making them highly suitable for mobile and portable energy applications. While SOFCs offer excellent fuel flexibility and are well-suited for large-scale stationary applications, their high operating temperatures present material and longevity challenges. AFCs and PAFCs demonstrate moderate efficiencies and operational stability but are limited by CO₂ sensitivity and lower power densities. MCFCs and DCFCs deliver high efficiencies and carbon capture capabilities, yet their high-temperature operation results in material degradation. DMFCs, although compact and compatible with methanol, face performance limitations such as methanol crossover. Since different technologies excel in specific applications, PEMFCs are considered most suitable for large-scale integration into hydrogen-powered energy systems due to their well-balanced combination of performance, efficiency, and deployment potential.
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