According to the International Energy Agency, global energy consumption is expected to increase more than 28% by 2040. The need of a green and sustainable energy transition, to feed the increasing energy demand while avoiding climate change, must be a priority for our society. Fuel Cells (FC) are promising green technologies appliable to different sectors, that are able to convert chemical energy directly into electricity, avoiding pollutants and CO2 production. In this scenario, Polymer Electrolyte Membrane Fuel Cells (PEMFCs) are hydrogen-fed, low temperature FCs suitable for the mobility applications, with the potential to contribute at the decarbonization of the transportation sector, together with hybrid and electric veichles.