Abstract
The composite membranes were prepared by impregnation of porous poly(tetrafluoroethylene) membranes with a 5 wt% Nafion solution. Scanning electron microscope micrographs of composite membranes show the surface and cross section of poly(tetrafluoroethylene) membranes were covered and filled with Nafion resin. Comparison of physical properties and fuel cell performance of composite membranes with those of Nafion membranes (DuPont Co) is presented. The composite membrane has better thermal stability and gas barrier property but worse ionic conductivity than Nafion membrane. Though the composite membrane has a lower conductivity than Nafion membrane, however, owing to the thinner thickness of composite membrane (in thickness of 20±5 µm) than Nafion-115 (in thickness of 125 µm) and Nafion-117 (in thickness of 175 µm) membranes, the composite membrane has a shorter H+ ion transporting pathway and thus a higher conductance (conductance = conductivity/membrane thickness) than Nafion-115 and Nafion-117 membranes. Thus the composite membrane has a better fuel cell performance than Nafion-117 and Nafion-115 membranes. In this report, we show that our composite membrane has a fuel cell performance similar to Nafion-112 membrane (in thickness of 50 µm).
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References
K. V. Kordesch and G. R. Simader, Fuel Cells and Their Applications, VCH Publishers Inc., Weinheim, Germany, 1996, Chapter 4.
R. M. Penner and C. R. Martin, J. Electrochem. Soc., 132, 514 (1985).
C. Liu and C. R. Martin, J. Electrochem. Soc., 137, 510 (1990).
C. Liu and C. R. Martin, J. Electrochem. Soc., 137, 3114 (1990).
M. W. Verbrugge, R. F. Hill and E. W. Schneider, AIChE J., 38, 93 (1992).
B. Bahar, A. R. Hobson and J. Kolde, US Patent 5,547,551 (1996).
K. M. Nouel and P. S. Fedkiw, Electrochim. Acta., 43, 2381 (1998).
A. E. Steck and C. Stone, US Patent 5,834,523 (1998).
J. E. Spethmann and J. T. Keating, WO Patent 98/50457A1 (1998).
S. Banerjee and J. D. Summers, WO Patent 98/51733A1 (1998).
F. Liu, B. Yi, D. Xing, J. Yu and H. Zhang, J. Membr. Sci., 212, 213 (2003).
J. Shim, H. Y. Ha, S. A. Hong and I. H. Oh, J. Power Source, 109, 412 (2002).
E. Szajzinska-Pietek and S. Schlick, Langmuir, 10, 2188 (1994).
R. S. Yeo, Polymer, 21, 432 (1980).
S. J. Lee, MS thesis, Department of Chemical Engineering, Yuan Ze University, Taiwan, 2002.
W. G. F. Grot, Nafion perfluorinated membranes product bulletin-Nafion®as a Separator in Electric Cells, DuPont Polymer Products Department, 1986.
S. V. Gangal, in Encyclopedia of Polymer Science, J. T. Kroschwitz, H. F. Mark, N. M. Bikales, C. G. Overberg and G. Menges, Eds., Wiley, New York, Vol. 16, 1989, p. 577.
G. Gebel, P. Aldebert and M. Pineri, Macromolecules, 20, 1425 (1987).
R. B. Moore and C. R. Martin, Macromolecules, 21, 1334 (1988).
G. Gebel and J. Lambard, Macromolecules, 30, 7914 (1997).
J. Larminie and A. Dicks, Fuel Cell Systems Explained, Wiley, Chichester, England, 2000, Chapter 3.
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Yu, T.L., Lin, HL., Shen, KS. et al. Nafion/PTFE Composite Membranes for Fuel Cell Applications. Journal of Polymer Research 11, 217–224 (2004). https://doi.org/10.1023/B:JPOL.0000043408.24885.c6
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DOI: https://doi.org/10.1023/B:JPOL.0000043408.24885.c6