Fuel cell technology enables the production of electricity directly from the chemical energy with high efficiencies and without combustion. It works through a redox reactions and the by-products of the process are only water and heat. The diploma thesis contains a review of the basics of operation, classification according to the electrolyte used and characterization of major cell types, presentation of Gibbs free energy and Nernst potential in relation to performance and an overview of technology implementation in portable, backup, transport and stationary applications.
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