Authors: Adeleye, S. A., Adewumi, A. A, Falana, A. B
Abstract: The increasing demand for clean, efficient, and sustainable energy systems has created the need for alternatives to conventional fossil fuel-based power generation technologies, which are associated with environmental pollution, greenhouse gas emissions, and gradual resource depletion. Among the emerging energy technologies, fuel cells have attracted significant attention because they convert chemical energy directly into electrical energy through electrochemical reactions without combustion, resulting in higher efficiency and lower environmental impact. This study aims to review different types of fuel cells, their operating principles, materials, performance characteristics, applications, and associated challenges. The study also evaluates the advantages and limitations of fuel cell systems in relation to modern energy demands and sustainable development goals. A systematic literature review approach was adopted for the study. Relevant information was obtained from peer-reviewed journal articles, textbooks, conference proceedings, technical reports, and publications from recognized scientific databases and energy organizations. The reviewed literature focused on major fuel cell technologies such as Proton Exchange Membrane Fuel Cells (PEMFCs), Solid Oxide Fuel Cells (SOFCs), Alkaline Fuel Cells (AFCs), Molten Carbonate Fuel Cells (MCFCs), and Phosphoric Acid Fuel Cells (PAFCs). Findings from the review revealed that fuel cells possess high energy conversion efficiency, low emissions, quiet operation, and wide application potential in transportation, stationary power generation, portable devices, and industrial systems. The study also showed that PEMFCs are more suitable for transportation applications due to their low operating temperature and fast response time, while SOFCs and MCFCs are more effective for stationary power systems because of their high efficiency and fuel flexibility. Despite these advantages, several limitations were identified, including high production cost, dependence on expensive catalyst materials, hydrogen storage and distribution challenges, durability issues, and inadequate infrastructure for large-scale commercialization. The study concludes that fuel cell technology remains one of the most promising clean energy solutions for future energy systems. However, wider adoption will depend on continuous technological improvement, cost reduction, development of hydrogen infrastructure, and supportive government policies aimed at promoting sustainable energy development.
DOI: http://doi.org/10.5281/zenodo.21913138
