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Novel Polymer Electrolyte Membrane, Based on Pyridine Containing Poly(ether sulfone), for Application in High-Temperature Fuel Cells

✍ Scribed by Elefterios K. Pefkianakis; Valadoula Deimede; Maria K. Daletou; Nora Gourdoupi; Joannis K. Kallitsis

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
113 KB
Volume
26
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

Summary: Novel poly(aryl ether sulfone) copolymers containing 2,5‐biphenylpyridine and tetramethyl biphenyl moieties were synthesized by polycondensation of 4‐fluorophenyl sulfone with 2,5‐(4′,4″ dihydroxy biphenyl)pyridine and tetramethyl biphenyl diol. Copolymers with different molecular weights and different monomer compositions were obtained. These copolymers exhibit excellent film‐forming properties, mechanical integrity, and high modulus up to 250 °C, high glass transition temperatures (above 280 °C) as well as high thermal stability up to 400 °C. In addition to the above properties required for PEMFC application, this novel material shows high oxidative stability and acid doping ability, enabling proton conductivity in the range of 10^−2^ S · cm^−1^ above 130 °C.

Synthesis of copolymers with high acid uptake and ionic conductivity.

magnified imageSynthesis of copolymers with high acid uptake and ionic conductivity.

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