Fuel cells are highly efficient electrochemical power sources directly converting the chemical energy of fuels. In the recent development history of Proton Exchange Membrane Fuel Cell (PEMFC) technology, an innovative solution resolved one highly interfering technical barrier of a maximum operating temperature limit of 80 C due to humidification and ion conductivity issues. The development and utilization of a novel membrane capable of operating at temperatures up to 200 C displays one of the most important and influential milestones in recent PEM technology. In these so-called High...