023

Gas Permeation coefficient

P2) H2

4.4X10"10

4.6X10"10

(25°C) (Dry)

o2

5.3X10"11

6.5X10"11

Gas Permeation coefficient

P2» H2

3.8 xiO"8

4.1 xio-8

(70°C) (Wet)

02

1.6 X10"8

1.8 xiO"8

Gas Permeation rate q3)

H2

2.5 xio"4

1.2X10""

(70°C) (Wet)

02

1.1 X10"4

5.5 x io"s

1) TB : tensile strength at breakdown (kg/cm2), EB : elongation at breakdown (%)

Performance of Flemion®S composites The performance of Flemion®S-composites were evaluated using the labo-cells (10 cm2) and the medium size cells (225 cm2). It was examined that Flemion® composites gave smaller internal resistance than Nafion®117 composites as shown in Fig.4. Flemion®S composites gave the output voltage of 0.66V (labo-cell) in labo-cells and 0.60V in medium size cells, 0.5A/cm2 at atmospheric pressure after the optimaization of test condition as shown in Fig.5.

0 0 2 0 < 06 OS 10 Current density.- A• cn 7

Fig.4 Performance of Flcmion^S coni|X)sitc and NafionS!117 composite

Fig.4 Performance of Flcmion^S coni|X)sitc and NafionS!117 composite

intern jl rcsisuncc

Current density/Aca-2

Current denstty/Acn-z

Fig.5 Single cell performance of Flcminn^S-compnsiics al atmospheric pressure (Hydrogen utilization : 70% / air utilization : 40%, cathode l't loading : 0.54 mg/cm2)

intern jl rcsisuncc

Current density/Aca-2

Current denstty/Acn-z

Fig.5 Single cell performance of Flcminn^S-compnsiics al atmospheric pressure (Hydrogen utilization : 70% / air utilization : 40%, cathode l't loading : 0.54 mg/cm2)

0 0

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