Abstract
A new sulfonated poly (aryl ether ketone sulfone) (SPAEKS-x) with locally dense sulfonic acid groups is synthesized by post-sulfonation. The SPAEKS-x membranes have a number average molecular weight of 45,000–58,000 g/mol and exhibit excellent mechanical properties. In addition, SPAEKS-x membranes have moderate water absorption, swelling rate, excellent thermal stability and good oxidative stability. The proton conductivity of SPAEKS-x membranes ranges from 35.6 to 52.4 mS/cm. All membranes show much lower methanol permeability than Nafion 117 membrane. Therefore, all membranes show higher proton selectivity than Nafion 117 membrane. In particularly, proton selectivity of SPAEKS-40 (15.8 × 104 S s cm−3) is about 5 times higher than that of Nafion 117 membrane (3.5 × 104 S s cm−3). Overall, SPAEKS-x membranes as a proton exchange membrane have shown very great application prospects in direct methanol fuel cells.
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29 January 2021
A Correction to this paper has been published: https://doi.org/10.1007/s10965-021-02421-4
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This work is supported by the National Natural Science Foundation of China [grant number 51173115].
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Yuan, C., Wang, Y. RETRACTED ARTICLE: Synthesis and characterization of a novel locally high dense sulfonated poly (aryl ether ketone sulfone) for DMFCs applications. J Polym Res 27, 318 (2020). https://doi.org/10.1007/s10965-020-02282-3
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DOI: https://doi.org/10.1007/s10965-020-02282-3