Alkali anion exchange membrane (AEM) fuel cells are being investigated to address current shortfalls of proton exchange membrane fuel cells, with the potential for direct use of methanol fuel and use of non-precious metal catalysts. Anion exchange membranes with properties that meet the demands of alkali fuel cell applications are not currently commercially available. Ionic conductivity and durability of AEMs has been shown to be heavily linked to humidity and temperature conditions. Further understanding of the effects of hydration level and anion selection is needed to improve the performance of these materials. In this work, randomly crosslinked copolymer AEMs were characterized under varied hydration levels and with hydroxide, carbonate and halide counter-ions. Varied methods of exchange to hydroxide form were investigated.
Using Broadband Electric Spectroscopy to Study Transport in Anion Exchange Membranes
LAVINA, SANDRA;DI NOTO, VITO;
2013
Abstract
Alkali anion exchange membrane (AEM) fuel cells are being investigated to address current shortfalls of proton exchange membrane fuel cells, with the potential for direct use of methanol fuel and use of non-precious metal catalysts. Anion exchange membranes with properties that meet the demands of alkali fuel cell applications are not currently commercially available. Ionic conductivity and durability of AEMs has been shown to be heavily linked to humidity and temperature conditions. Further understanding of the effects of hydration level and anion selection is needed to improve the performance of these materials. In this work, randomly crosslinked copolymer AEMs were characterized under varied hydration levels and with hydroxide, carbonate and halide counter-ions. Varied methods of exchange to hydroxide form were investigated.Pubblicazioni consigliate
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