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Swelling properties of alkali-metal doped polymeric anion-exchange membranes in alcohol media for application in fuel cells

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Lain, L. and Barragán García, Vicenta María (2016) Swelling properties of alkali-metal doped polymeric anion-exchange membranes in alcohol media for application in fuel cells. International journal of hydrogen energy, 41 (32). pp. 14160-14170. ISSN 0360-3199

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Official URL: http://dx.doi.org/10.1016/j.ijhydene.2016.05.283


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Abstract

Swelling properties of four commercial anion-exchange membranes with different structure have been analyzed in several hydro-organic media. With this target, the liquid uptake and the surface expansion of the membranes in contact with different pure liquids, water and alcohols (methanol, ethanol and 1-propanol), and with water alcohol mixtures with different concentrations have been experimentally determined in presence and in absence of an alkaline medium (LiOH, NaOH and KOH of different concentrations). The alkali-metal doping effect on the membrane water uptake has also been investigated, analyzing the influence of the hydroxide concentration and the presence of an alcohol in the doping solution. The results show that the membrane structure plays an essential role in the influence that alcohol nature and alkaline media has on the selective properties of the membrane. The heterogeneous membranes, with lower density, show higher liquid uptakes and dimensional changes than the homogeneous membranes, regardless of the doping conditions. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.


Item Type:Article
Additional Information:

© 2016 Hydrogen Energy Publications.
© Published by Elsevier Ltd.
Financial support of this work by Banco de Santander and Universidad Complutense de Madrid within the framework of Project 910358 UCM Research Group-GR3/14 is gratefully acknowledged.

Uncontrolled Keywords:Transport-properties; Aqueous-solutions; Water-uptake; Methanol; Densities; Viscosities; Mixtures
Subjects:Sciences > Physics > Thermodynamics
ID Code:39748
Deposited On:28 Oct 2016 14:17
Last Modified:24 Aug 2018 23:01

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