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Sulfonated poly(ether ether sulfone) copolymers for proton exchange membrane fuel cells
Author(s) -
Wang Zhe,
Li Xianfeng,
Zhao Chengji,
Ni Hongzhe,
Na Hui
Publication year - 2007
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.24933
Subject(s) - ether , membrane , copolymer , polymer chemistry , condensation polymer , proton exchange membrane fuel cell , sulfone , nafion , thermal stability , materials science , electrolyte , chemistry , polymer , organic chemistry , electrochemistry , biochemistry , electrode
Novel aromatic sulfonated poly(ether ether sulfone)s (SPEESs) with tert ‐butyl groups were synthesized by aromatic nucleophilic polycondensation of disodium 3,3′‐disulfonate‐4,4′‐dichlorodiphenylsulfone (SDCDPS), 4,4′‐dichlorodiphenylsulfone (DCDPS), and tert ‐butylhydroquinone (TBHQ). The resulting copolymers showed very good thermal stability and could be cast into tough membranes. The morphology of the membranes was investigated with atomic force microscopy. The proton conductivity of SPEES‐40 membranes increased from 0.062 S/cm at 25°C to 0.083 S/cm at 80°C, which was higher than the 0.077 S/cm of Nafion 117 under the same testing conditions. These copolymers are good candidates to be new polymeric electrolyte materials for proton exchange membrane fuel cells. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 1443–1450, 2007