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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
energy
Characterization of an anionic-exchange membranes for direct methanol alkaline fuel cells
International Journal of Hydrogen Energy, Volume 35, No. 11, Year 2010
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Description
Ammonium quaternized polymers such as poly (arylene ether sulfones) are being developed and studied as candidates of ionomeric materials for application in alkaline fuel cells, due to their low cost and promising electrochemical properties. In this work, a quaternary ammonium polymer was synthesized by chloromethylation of a commercial polysulfone followed by amination process. Quaternized polysulfone membrane properties such us water and water-methanol uptake, electrical conductivity and Young's modulus were evaluated and compared to Nafion 117, commonly employed in direct methanol fuel cells. The anionic polysulfone membrane sorbs more water than Nafion all over the whole range of water activities, but it uptakes much less methanol as compared to Nafion. The specific conductivity of the fully hydrated polysulfone membrane equilibrated with KOH solutions at ambient temperature increases with the KOH concentration, reaching a maximum of 0.083 S cm-1 for 2 M KOH, slightly less conductive than Nafion 117. The elastic modulus of the polysulfone membranes inmersed in water is similar to that reported for Nafion membranes under the same conditions. We concluded that quaternized polysulfone membrane are good candidates as electrolytes in alkaline direct methanol fuel cells. © 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
Authors & Co-Authors
Abuin, Graciela C.
Argentina, San Martin
Instituto Nacional de Tecnologia Industrial, San Martin, ar
Nonjola, Patrick T.N.
South Africa, Pretoria
The Council for Scientific and Industrial Research
Franceschini, Esteban A.
Argentina, Buenos Aires
Comision Nacional de Energia Atomica Argentina
Izraelevitch, Federico H.
Argentina, Buenos Aires
Comision Nacional de Energia Atomica Argentina
Mathe, Mkhulu Kenny
South Africa, Pretoria
The Council for Scientific and Industrial Research
Corti, Horacio R.
Argentina, Buenos Aires
Comision Nacional de Energia Atomica Argentina
Statistics
Citations: 63
Authors: 6
Affiliations: 3
Identifiers
Doi:
10.1016/j.ijhydene.2009.12.128
ISSN:
03603199
Research Areas
Environmental