Direct oxidation. methanol fuel cells DMFCs. are attractive for several applications, however, there are several barriers which must
be overcome before they can become an alternative to internal combustion engines. At present, methanol crossover from the anode to the
cathode appears to be the major limitation. This work shows the information on the influence of methanol crossover in DMFC and on the
effort to get a more methanol-impermeably polymer electrolyte found in the literature.