Nowadays, clean and green energies are solutions in solving the issues faced with the use of the energies obtained from fossil resources. The energies observed from electrochemical processes are the typical clean energy among others such as solar, wind, geothermal heat, waves, etc. In view of electrochemical energy from generation to conversion and storage, the devices such as fuel cells, batteries and supercapacitors have attracted more attention. This speech deals with polymeric fuel cells (PEMFC) and supercapacitors (EDLC).
