Gore-Select conductive membrane

The conductivity data measured in situ in Fig. 1 are within the temperature range from room temperature (27°C) to -30°C. In contrast, Cleghorn et al. reported the proton conductivity for Gore-Select membranes in the temperature range of 40-100°C.23 Extrapolating the correlation of Cleghorn et al. to 27°C and at 100% relative humidity, the membrane conductivity is calculated to be 0.027 S/cm, which is in reasonable agreement with our in-situ measurement of 0.021 S/cm. 

One option is to use Naflon and PTFE composite membrane that is reinforced with microporous medium. Here, the transmission channel is provided by Naflon. This composition can improve the mechanical strength and stability of the membrane. It can also minimize the membrane thickness to save the material cost. At the same time, this structure can improve the distribution of water and the proton conductivity of the membrane [42-44], Gore and Associates Company has developed such product named Gore-Select , The shrinkage of Gore-Select is a quarter of Naflon 117 to better establish dimensional stability. Comparing to Naflon 117, its mechanical strength enhancement is obvious [45-48],... 

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