期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 45, 期 19, 页码 11148-11157出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2020.02.057
关键词
Fluorene groups; Comb-shaped; Poly(arylene ether sulfone nitrile); Anion exchange membranes; Microphase separation
资金
- National Natural Science Foundation of China [21706032]
- Scientific Research Project of Huaqiao University [605-50Y18020]
- Education Scientific Research Project of Fujian Province of China [JAT170378]
A series of comb-shaped fluorene-based poly (arylene ether sulfone nitrile) (CFPESN-x) was synthesized as anion exchange membranes (AEMs). The well-designed architecture of fluorene-based main chains and comb-shaped C8 long alkyl side chains containing quaternary ammonium groups was responsible for the clear microphase-separated morphologies, as confirmed by small angle X-ray scattering and atomic force microscopy. Moreover, nitrile groups on main chains also showed a profound influence on membrane morphology and properties. CFPESN-x exhibited more interconnected ionic domains with increasing the nitrile group content resulting in higher conductivities and anti-swelling property. Then CFPESN-x exhibited high ionic conductivities in the range of 27.1 -91.5 mS cm(-1) from 30 to 80 degrees C and superior ratios of conductivity to swelling ratio at 80 degrees C at moderate IECs. Moreover, CFPESN-x also showed good mechanical properties and thermal stability, and optimizable alkaline stability and single cell performance. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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