Nafion-clay nanocomposite membranes: Morphology and properties

Nafion-clay nanocomposite membranes: Morphology and properties

http://www.elsevier.com/wps/find/journaldescription.cws_home/30466/description#description

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Bibliographic Details
Main Authors: Alonso, R.H., Estevez, L., Lian, H.Q., Kelarakis, A., Giannelis, E.P.
Format: article biblioteca
Language:en_US
Published: ELSEVIER SCI LTD 2009-05-22
Subjects:Nafion, Nanoclay, Montmorillonite,
Online Access:https://hdl.handle.net/1813/17821
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id dig-cornell-us-181317821
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spelling dig-cornell-us-1813178212015-07-08T08:08:48Z Nafion-clay nanocomposite membranes: Morphology and properties Alonso, R.H. Estevez, L. Lian, H.Q. Kelarakis, A. Giannelis, E.P. Nafion Nanoclay Montmorillonite http://www.elsevier.com/wps/find/journaldescription.cws_home/30466/description#description A series of Nafion-clay nanocomposite membranes were synthesized and characterized. To minimize any adverse effects on ionic conductivity the clay nanoparticles were HI exchanged prior to mixing with Nafion. Well-dispersed, mechanically robust, free-standing nanocomposite membranes were prepared by casting from a water suspension at 180 degrees C under pressure. SAXS profiles reveal a preferential orientation of Nafion aggregates parallel to the membrane surface, or normal plane. This preferred orientation is induced by the platy nature of the clay nanoparticles, which tend to align parallel to the sureface of the membrane. The nanocomposite membranes show dramatically reduced methanol permeability, while maintaining high levels of proton conductivity. The hybrid films are much stiffer and can withstand much higher temperatures compared to pur Nafion. The superior thermomechanical, electrochemical and barrier properties of the nanocomposite membranes are of significant interest for direct methanol fuel cell applications. (C) 2009 Elsevier Ltd. All rights reserved. We acknowledge the financial support of the Cornell Fuel Cell Institute funded by DOE. EPG acknowledges the support of Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST). 2010-11-05T18:41:31Z 2010-11-05T18:41:31Z 2009-05-22 article Polymer, 50 (11), 2402-2410, May 22, 2009 0032-3861 10.1016/j.polymer.2009.03.020 https://hdl.handle.net/1813/17821 en_US application/pdf ELSEVIER SCI LTD
institution CORNELL US
collection DSpace
country Estados Unidos
countrycode US
component Bibliográfico
access En linea
databasecode dig-cornell-us
tag biblioteca
region America del Norte
libraryname Biblioteca de Cornell
language en_US
topic Nafion
Nanoclay
Montmorillonite
Nafion
Nanoclay
Montmorillonite
spellingShingle Nafion
Nanoclay
Montmorillonite
Nafion
Nanoclay
Montmorillonite
Alonso, R.H.
Estevez, L.
Lian, H.Q.
Kelarakis, A.
Giannelis, E.P.
Nafion-clay nanocomposite membranes: Morphology and properties
description http://www.elsevier.com/wps/find/journaldescription.cws_home/30466/description#description
format article
topic_facet Nafion
Nanoclay
Montmorillonite
author Alonso, R.H.
Estevez, L.
Lian, H.Q.
Kelarakis, A.
Giannelis, E.P.
author_facet Alonso, R.H.
Estevez, L.
Lian, H.Q.
Kelarakis, A.
Giannelis, E.P.
author_sort Alonso, R.H.
title Nafion-clay nanocomposite membranes: Morphology and properties
title_short Nafion-clay nanocomposite membranes: Morphology and properties
title_full Nafion-clay nanocomposite membranes: Morphology and properties
title_fullStr Nafion-clay nanocomposite membranes: Morphology and properties
title_full_unstemmed Nafion-clay nanocomposite membranes: Morphology and properties
title_sort nafion-clay nanocomposite membranes: morphology and properties
publisher ELSEVIER SCI LTD
publishDate 2009-05-22
url https://hdl.handle.net/1813/17821
work_keys_str_mv AT alonsorh nafionclaynanocompositemembranesmorphologyandproperties
AT estevezl nafionclaynanocompositemembranesmorphologyandproperties
AT lianhq nafionclaynanocompositemembranesmorphologyandproperties
AT kelarakisa nafionclaynanocompositemembranesmorphologyandproperties
AT giannelisep nafionclaynanocompositemembranesmorphologyandproperties
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