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Membranes limiting current evaluations

SPI membranes have also been recently evaluated in DMFCs [76,106]. The DMFC performance in identical conditions and with similar thicknesses is slightly improved with SPI compared to Nafion 112 [106]. The methanol crossover is twice lower than the other explored range of current densities, corresponding to a lower permeabihty as evidenced by the higher open circuit voltage. However, the current densities are still limited (0.15 A/cm at 0.5 V) and the membrane also exhibited unsatisfactory stability in DMFC conditions [76]. [Pg.245]

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