For instance they have been identified as the principal source of CO2 …show more content…
As a consequence, in order to overcome the chal-lenges posed by the current consumption of fossil fuels, alternative sources of energy are being stud-ied together with the development of new technol-ogies that could operate with them.14 One example of these environmentally friendly technologies are fuel cells, which are electrochemical devices that convert chemical energy into electrical energy with low CO2 emission.2 One of the most promising type of fuel cells is high temperature proton exchange membrane fuel cells (HT-PEMFCs), suitable for automobile applications due to their high power density, high tolerance to fuel impurities, rapid start-up and high efficiency.2, 15,