[en] The counter-ions of montmorillonite have been exchanged for ammonium cations containing either a sulfonic acid or a carboxylic acid in order to improve the performances of sulfonated membranes in direct methanol fuel cell. These layered silicates have been dispersed within Nafion® by solution mixing. Comparison with conventional organo-modified montmorillonite (Cloisite 30B) shows that the incorporation of carboxylic acid in the clay galleries improves the filler dispersion and, consequently, the methanol barrier properties. Moreover, the negative impact of Cloisite 30B on the ionic conductivity is restricted.
Research center :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry Materials science & engineering
Author, co-author :
Thomassin, Jean-Michel ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Pagnoulle, Christophe; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Caldarella, Giuseppe ; Université de Liège - ULiège > Department of Applied Chemistry > Laboratory of Industrial Chemistry
Germain, Albert ; Université de Liège - ULiège > Department of Applied Chemistry > Laboratory of Industrial Chemistry
Jérôme, Robert ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Language :
English
Title :
Impact of acid containing montmorillonite on the properties of Nafion® membranes
The Région Wallonne in the frame of the NANOCELL program BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
Commentary :
The authors acknowledge Polymer (Elsevier) for allowing them to archive this paper.
