Perfluorinated membranes and related materials

Nafion materials, and more generally perfluorinated ionomers, are particularly suitable for water and brine electrolysis and, to date, no viable alternative has been found for SPE applications. The dissolution of Nafion membranes allows the preparation of material with high porosity and high electroactive area. Such structures are required for the development of high power density SPE fuel cells. In recent work, Aldebert et al. have presented different methods for the preparation of SPE 

Polymers having both electronic and ionic conductivities are of interest due to the applications of composite materials in polymeric electrodes or in electrochemical catalysis. Electronic and ionic conductive polymer composites have been synthesized by electropolymerization using pyrrole, bithiophene or aniline trifluoromethane with an hydrophobic ionomer gel of Nafion type . With pyrrole, such materials reach conductivities of 1000 2 cm and have good mechanical properties. 

in Handbook of Fuel Cell Technology, W. Mitchell Jr (ed) (Academic Press, New York (1963)) 253. 

Niedrach and W. T. Grubb, in Fuel Cell Technology, C. Berger (ed) (Prentice-Hall, Englewood Cliffs, N.J. (1967)) 425. 

Jenard, Laboratory of Thermodynamic Electrochemistry, U.L.B., Brussels, private communication. 

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