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HomeMaterials Science ForumMaterials Science Forum Vols. 654-656High Water Diffusivity in Low Hydration...

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

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Abstract:

This paper compares proton diffusion through plasma-polymerised proton-exchange membranes (PEMs) produced using traditional wet-chemical methods (Nafion®) 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 Nafion® is the same (within 1 standard error) even though the plasma-polymerised membrane has 80 % less water than the Nafion®. We attribute this result to the highly cross-linked structure of the plasma-polymerised membrane.

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Periodical:

Materials Science Forum (Volumes 654-656)

Pages:

2871-2874

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.654-656.2871

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Online since:

June 2010

Authors:

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

Keywords:

Diffusion, Fuel Cell Membrane, Neutron Scattering, Plasma Polymerisation, Polymer Membranes

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