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Poly(arylene ether)s with Pendant Perfluoroalkyl Sulfonic Acid Groups as Proton‐Exchange Membrane Materials
Author(s) -
Ghassemi Hossein,
Schiraldi David A.,
Zawodzinski Thomas A.,
Hamrock Steven
Publication year - 2011
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201000650
Subject(s) - arylene , chemistry , sulfonic acid , polymer chemistry , nafion , membrane , ether , potassium hydroxide , side chain , ion exchange , electrolyte , polymer , polysulfone , proton exchange membrane fuel cell , sulfuric acid , hydroxide , aqueous solution , nuclear chemistry , inorganic chemistry , alkyl , ion , electrochemistry , organic chemistry , aryl , biochemistry , electrode
New membranes were prepared and evaluated as polymer electrolytes for PEMFCs. Polymers with PSU in the main chain and –C(O)(CF 2 ) 3 SO 3 H in the side chain (PSU‐PSA) were synthesized by substitution of PSU‐Li and SFBF, followed by treatment with aqueous potassium hydroxide then sulfuric acid. The proton conductivity of PSU‐PSA with an ion exchange capacity (IEC) of 1.12 mmol · g −1 was 0.091 S · cm −1 at 80 °C under 100% relative humidity. A hydrogen/air PEMFC test of PSU‐PSA with an IEC value of 1.12 mmol · g −1 produced a maximum power output of 0.265 W · cm −2 . A DMA measurement revealed that PSU‐PSA had an α‐relaxation temperature around 196 °C which is higher than the value reported for Nafion.