Jump to main content
Jump to site search

Issue 43, 2015
Previous Article Next Article

Anion exchange membranes composed of perfluoroalkylene chains and ammonium-functionalized oligophenylenes

Author affiliations

Abstract

A novel series of ammonium-containing copolymers (QPAFs) were synthesized as anion exchange membranes for alkaline fuel cell applications. The precursor copolymers (Mw = 28.3–90.1 kDa) composed of perfluoroalkylene and phenylene groups were obtained by a nickel promoted polycondensation reaction. Chloromethylation and quaternization reactions of the precursors provided thin and ductile QPAF membranes with ion exchange capacity (IEC) ranging from 0.79 to 1.74 meq g−1. The QPAF membranes exhibited a phase-separated morphology based on the hydrophilic/hydrophobic differences in the main chain structure. The QPAF membrane with an optimized copolymer composition and IEC = 1.26 meq g−1 showed high hydroxide ion conductivity (95.5 mS cm−1 in water at 80 °C), excellent mechanical properties (large elongation at break (218%)), and reasonable alkaline stability at 80 °C. An alkaline fuel cell using the QPAF as the membrane and electrode binder achieved the maximum power density of 139 mW cm−2 at a current density of 420 mA cm−2.

Graphical abstract: Anion exchange membranes composed of perfluoroalkylene chains and ammonium-functionalized oligophenylenes

Back to tab navigation

Supplementary files

Publication details

The article was received on 17 Aug 2015, accepted on 17 Sep 2015 and first published on 17 Sep 2015


Article type: Paper
DOI: 10.1039/C5TA06454F
Author version
available:
Download author version (PDF)
J. Mater. Chem. A, 2015,3, 21779-21788

  •   Request permissions

    Anion exchange membranes composed of perfluoroalkylene chains and ammonium-functionalized oligophenylenes

    H. Ono, J. Miyake, S. Shimada, M. Uchida and K. Miyatake, J. Mater. Chem. A, 2015, 3, 21779
    DOI: 10.1039/C5TA06454F

Search articles by author

Spotlight

Advertisements