Synthesis and properties of novel cross-linked composite sulfonated poly (aryl ether ketone sulfone) containing multiple sulfonic side chains for high-performance proton exchange membranes

Jingmei Xu, Zhenguo Zhang, Kai Yang, Huixuan Zhang and Zhe Wang

Renewable Energy, 2019, vol. 138, issue C, 1104-1113

Abstract: The synthesis and properties of novel cross-linked composite sulfonated poly (aryl ether ketone sulfone) containing multiple sulfonic side chains as proton exchange membranes were investigated. The multiple side-chain membranes were prepared by direct polycondensation and simple free radical reaction. The cross-linked composite membranes were prepared by solvent coating method. The prepared membranes showed lower water absorption and swelling ratio than that of Nafion 117. The S-Am-2.0/C exhibited the highest proton conductivity of 0.135 S cm−1 at 80 °C, while its swelling ratio was only 3.59% at the same temperature. Much lower methanol permeability coefficients in the range of 3.11 × 10−8 cm2 s−1–7.25 × 10−7 cm2 s−1 compared to Nafion 117 (2.29 × 10−6 cm2 s−1) were also observed for the prepared membranes. Moreover, the S-Am-2.0/C exhibited higher peak power density (121.09 mW cm−2) than that of main-chain type C-SPAEKS membrane (66.65 mW cm−2). The results indicate that the cross-linked composite membranes are good candidate for fuel cells.

Keywords: Sulfonated poly (aryl ether ketone sulfone); Multiple sulfonic side chains; Proton exchange membranes; Proton conductivity; Fuel cells (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:138:y:2019:i:c:p:1104-1113

DOI: 10.1016/j.renene.2019.02.042

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