Abstract
A series of sulfonated poly(ether ether ketone)s were successfully synthesized via nucleophilic displacement condensation. The membranes are accordingly cast from their DMSO solutions, and fully characterized by determining the ion-exchange capacity, water uptake, dimensional stabilities, proton conductivity and mechanical properties. Among membranes, the block-7c-3 was successfully synthesized by the reaction of Block-6c with chlorosulfonic acid, with the feed ratio of repeated unit to chlorosulfonic acid of 1:8. The experimental results show that the membrane from block-7c-3 has good mechanical, oxidative and dimensional stabilities together with high proton conductivity (5.15 × 10−2 Scm−1) at 80 °C under 100 % relative humidity. The membranes also possess excellent thermal and dimensional stabilities, in this respect, they are potential and promising proton conducting membrane material for PEM full cell applications.
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The authors would like to thank for the Natural Science Foundation of China (21306124) financial support of this work and Taiyuan University of Technology College Students’ Innovative Entrepreneurial Training Plan (Grant 13060).
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Luo, J.J., Song, Y.H., Wang, Y.L. et al. Synthesis and properties of fluorene-containing sulfonated poly (ether ether ketone) as proton-exchange membrane for PEM fuel cell application. J Polym Res 22, 41 (2015). https://doi.org/10.1007/s10965-015-0683-9
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DOI: https://doi.org/10.1007/s10965-015-0683-9