High performance sulfonated aromatic ionomers by聽solvothermal macromolecular synthesis

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• 作者：M. Luisa Di Vona^a ; ^{divona@uniroma2.it} ; Giulio Alberti^b ; Emanuela Sgreccia^a ; ^c ; Mario Casciola^b ; Philippe Knauth^c
• 关键词：Cross-Linking ; Sulfonated polyetheretherketone ; Sulfonated polyphenylsulfone ; Fuel cells ; Durability
• 刊名：International Journal of Hydrogen Energy
• 出版年：2012
• 期刊代码：42_03603199
• 类别：ch
• 出版时间：May, 2012
• 卷：37
• 期：10
• 页码：8672-8680
• 文件大小：680 K

摘要

Thermal cross-linking in presence of residual solvent dimethylsulfoxide without any addition of cross-linker molecules is described. This elegant method increases spectacularly the mechanical and hydrolytic stability of sulfonated aromatic polymers (SAP), making them suitable for use in liquid water also at 145聽掳C. Data on water uptake, mechanical properties and proton conductivity are presented and discussed from a bond energy point of view. The developed method is also inexpensive, being incorporated in the normal membrane casting procedure. This opens new horizons and hitherto conventionally disregarded SAP membranes should be reconsidered as fuel cell membranes.