surface roughness of the Nafion membrane in a PEM fuel cell

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surface roughness of the Nafion membrane in a PEM fuel cell ( surface-roughness-nafion-membrane-a-pem-fuel-cell )

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Figure 4 - Area-scale analysis of measurements of mold T3 taken with the Olympus LEXT3100 using the 20x and 100x objective lenses. Discrimination of Modified Nafion Membranes The tested modified Nafion membranes were molded using molds G1 and T3. These were the smoothest and the roughest surface textures transferred to the Nafion membrane. These surfaces were discriminated by the area-scale analysis results shown in Fig. 5. The discrimination of the surfaces was not evident simply by looking at the area-scale results; however an F-test of 90% confidence was performed on the area scale results indicating that the surfaces can be distinguished at the micrometer scale as demonstrated by Fig. 6. The inscribed region indicates the point at which the scale of the area-scale analysis is small enough the relative area of the two surfaces can be discriminated with a 90% confidence. 21

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