End‐group cross‐linked membranes based on highly sulfonated poly(arylene ether sulfone) with vinyl functionalized graphene oxide as a cross‐linker and a filler for proton exchange membrane fuel cell application,Journal of Polymer Science

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End‐group cross‐linked membranes based on highly sulfonated poly(arylene ether sulfone) with vinyl functionalized graphene oxide as a cross‐linker and a filler for proton exchange membrane fuel cell application
Journal of Polymer Science ( IF 3.9 ) Pub Date : 2020-11-11 , DOI: 10.1002/pol.20200665
Junghwan Kim ₁ , Kihyun Kim ₂ , Jusung Han ₁ , Hyunhee Lee ₁ , Hyejin Kim ₁ , Sungjun Kim _{1,

3} , Yung‐Eun Sung _{1,

3} , Jong‐Chan Lee ₁

Affiliation

High‐performance end‐group cross‐linked sulfonated poly(arylene ether sulfone) (SPAES) membranes are developed using thiolate‐terminated SPAES with very high degree of sulfonation (DS) such as 90 mol% (SK‐SPAES90) and vinyl functionalized graphene oxide (VGO) as a cross‐linker and a filler through the thiol‐Michael addition reaction. Since free‐standing membranes for fuel cell application could not be prepared using the water soluble and highly proton conductive SPAES with high DS of 90 mol%, cross‐linked SPAES90 membranes are intentionally prepared. The cross‐linked membranes are found to have good physicochemical properties with excellent proton conductivity that can be applied for the proton exchange membrane. In particular, the cross‐linked SPAES90 membrane prepared using 1.0 wt% of VGO exhibits better dimensional stability than a SPAES70 membrane from the linear SPAES with DS of 70 mol% and the proton conductivities of this membrane are larger than those of Nafion 211 at 80 °C under different relative humidity conditions (40%‐95%).

中文翻译：

基于高度磺化的聚（亚芳基醚砜）的端基交联膜，以乙烯基官能化的氧化石墨烯作为交联剂和质子交换膜燃料电池应用的填料

高性能端基交联磺化聚（亚芳基醚砜）（SPAES）膜是使用具有极高磺化度（DS）（例如90 mol％（SK-SPAES90））和乙烯基官能化石墨烯的硫醇盐封端的SPAES开发的硫醇-迈克尔加成反应生成的氧化物（VGO）作为交联剂和填充剂。由于无法使用水溶性和高质子传导性，高DS值为90 mol％的高质子传导性SPAES制备用于燃料电池的独立式膜，因此特意制备了交联的SPAES90膜。发现该交联的膜具有良好的理化性质和优异的质子传导性，可用于质子交换膜。特别是，使用1制备的交联SPAES90膜。

更新日期：2020-12-15

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