100

Fig.3

' Pore diaaeter/u m

Pore distribution of the membrane-electrode composites results

Basic properties of the membranes Basic properties of the membranes are summarized in Table X. It was examined that the area resistance of Flemion®S is about 43% of that of Nafion®117 and thermal stability and gas permeability of Flemion®S are almost equivalent to those of Nafion®117. It was also found that the gas permeability of the membrane-electrode composites were larger than that of the plain membranes.

Table 1 Characteristics of Hemion®S and Nafion®117
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