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Anion conducting poly(vinyl alcohol)/poly(diallyldimethylammonium chloride) membranes with high durable alkaline stability for polymer electrolyte membrane fuel cells

Par Conseil national de recherches du Canada

DOITrouver le DOI : https://doi.org/10.1016/j.jpowsour.2013.02.059
AuteurRechercher : ; Rechercher :
FormatTexte, Article
SujetAlkaline anion-exchange membranes; Chemical cross-linking; Diallyldimethylammonium chlorides; Hydrocarbon membrane; Hydroxide conductivities; Membrane electrode assemblies; Poly (vinyl alcohol) (PVA); Poly(diallyldimethylammonium chloride); Chlorine compounds; Crosslinking; Ions; Proton exchange membrane fuel cells (PEMFC); Membranes
Résumé
Novel and highly durable alkaline anion-exchange membranes, PVA/PDDA-OH-, are synthesized using a combined thermal and chemical cross-linking method. In the synthesis, poly(vinyl alcohol) (PVA) is used as polymer matrix and poly(diallyldimethylammonium chloride) (PDDA) as anion charge carriers. The resulting membrane exhibits a high hydroxide conductivity of 0.025 S cm-1 at a polymer composition PVA/PDDA being 1:0.5 by mass. A promising H2/O2 fuel cell peak power density of 32.7 mW cm-2 is reached for MEA fabricated with this PVA/PDDA-OH- at 25 °C. The membrane also shows a strong alkaline stability in 8 M KOH at 80 °C for 360 h. This is considered a new record for the fully cation-free hydrocarbon membranes for the use in alkaline fuel cell, seeing that PVA/PDDA-OH- is made simply of aliphatic skeletons. © 2013 Elsevier B.V. All rights reserved.
Date de publication
Dans
  • Journal of Power Sources 237 (2013) : 1–4.
Langueanglais
Publications évaluées par des pairsOui
Numéro NPARC21269739
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Identificateur de l’enregistrement9ca6d256-13df-433e-811f-1bbaa306d383
Enregistrement créé2013-12-13
Enregistrement modifié2020-04-22
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