HOLISTIC HEALTH MINISTRIES

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SYMW...But PEM DMFCs have operational problems, the most notable of which is “methanol crossover”. The membrane in a PEM DMFC allows methane to cross over from the anode to the cathode side lessening efficiency by as much as 30%. Researchers have not been able to develop a PEM capable of eliminating crossover without increasing DMFC resistance and cost. The inherent engineering difficulties such as moisture and temperature control with PEM fuel cells coupled with the crossover problem of PEM DMFCs have led many to believe that portable, efficient and inexpensive fuel cells may be several years from commercialization.