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High Water Diffusivity in Low Hydration Plasma-Polymerised Proton Exchange Membranes

Date

2010

Authors

Peterson, Vanessa K
Corr, Cormac
Kearley, Gordon
Boswell, Roderick
Izaola, Zunbeltz

Journal Title

Journal ISSN

Volume Title

Publisher

Trans Tech Publications

Abstract

This paper compares proton diffusion through plasma-polymerised proton-exchange membranes (PEMs) produced using traditional wet-chemical methods (NafionR) and those produced using plasma-polymerisation. Using quasielastic neutron scattering and a simple model of proton motion we find the measured diffusion-rate of protons in the plasma-polymerised material and NafionR is the same (within 1 standard error) even though the plasma-polymerised membrane has 80 % less water than the NafionR. We attribute this result to the highly cross-linked structure of the plasma-polymerised membrane.

Description

Keywords

Keywords: Crosslinked structures; High water; Plasma polymerisation; Polymer membrane; Polymer membranes; Polymerisation; Proton diffusion; Proton exchange membranes; Proton motion; Proton-exchange membrane; Quasi elastic neutron scattering; Simple model; Standard Diffusion; Fuel cell membranes; Neutron scattering; Plasma polymerisation; Polymer membranes

Citation

Source

Materials Science Forum

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.4028/www.scientific.net/MSF.654-656.2871

Restricted until

2037-12-31