Facile synthesis and properties of poly(ether ketone cardo)s bearing heterocycle groups for high temperature polymer electrolyte membrane fuel cells

Ruihong Liu, Jin Wang, Xuefu Che, Ting Wang, David Aili, Qingfeng Li*, Jingshuai Yang*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Novel high temperature polymer electrolyte membranes (HT-PEMs) are fabricated from commercial and low-cost poly(ether ketone cardo) (PEK-Cardo). Rather than normal chloromethylation and quaternization procedure to introduce basic groups into poly(arylene ether)s, three different long side-chain basic groups are grafted into PEK-Cardo through a facile one-step lactamization between the cardo phenolphthalein type moiety in PEK-Cardo and amino compounds (i.e. 1-(3-aminopropyl) imidazole (APIm), 1-(3-aminopropyl) pyrrolidin-2-one (APy) and 3-(dimethylamino)-1-propylamine). The obtained lactamized PEK-Cardo membranes exhibit excellent phosphoric acid doping capability and the physicochemical properties are optimized by adjusting the chemical structure and grafting degree of side-chain basic groups. Fuel cell results demonstrate a big potential for HT-PEMFC applications. Thus, this proposal provides a new, straightforward and low-cost method to prepare high-performance HT-PEMs.
Original languageEnglish
Article number119584
JournalJournal of Membrane Science
Volume636
Number of pages9
ISSN0376-7388
DOIs
Publication statusPublished - 2021

Keywords

  • Lactamization
  • Poly(ether ketone cardo)
  • High temperature
  • Polymer electrolyte membrane
  • Fuel cell

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