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


Autoria(s): Lain, L.; Barragán García, Vicenta María
Data(s)

24/08/2016

31/12/1969

Resumo

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.

Formato

application/pdf

Identificador

http://eprints.ucm.es/39748/1/Barrag%C3%A1n03postprint%2Bembargo%2024_08_18.pdf

Idioma(s)

en

Publicador

Pergamon-Elsevier Science Ltd

Relação

http://eprints.ucm.es/39748/

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

10.1016/j.ijhydene.2016.05.283

910358

Direitos

info:eu-repo/semantics/embargoedAccess

Palavras-Chave #Termodinámica
Tipo

info:eu-repo/semantics/article

PeerReviewed