400-8910-119
首页 > 文献资料 > ES-Bank > 详情
Properties and Fuel Cell Performance of a Nanofiber Composite Membrane with 660 Equivalent Weight Perfluorosulfonic Acid
2019/11/27 21:40:39 admin
A nanofiber composite membrane, composed of 72 vol% 660 equivalent weight (EW) perfluorosulfonic acid (PFSA, from 3M Company) and 28 vol% polyphenylsulfone (PPSU), was fabricated and characterized. A newly developed dual fiber electrospinning method was utilized for membrane fabrication, where the two polymers were simultaneously electrospun into a single mat. Follow-on processing converted the mat into a fully dense and functional fuel cell ion-exchange membrane with polyphenylsulfone nanofibers embedded in the ionomer. The proton conductivity of the composite membrane was high, e.g., 93 mS/cm at 120 degrees C, 50% relative humidity, compared to 37 mS/cm for commercial Nafion. The dimensional stability of the membrane upon liquid water uptake was excellent, with an in-plane (areal) swelling of only 5% at room temperature. A MEA containing a 660 EW nanofiber composite membrane with 3M 825 EW PFSA ionomer as the catalyst binder had significantly higher power output in a hydrogen/air fuel. cell than a MBA with a Nafion 211 membrane and Nafion PFSA binder. The power output of the nanofiber membrane MBA was relatively insensitive to changes in feed gas humidity, between 50% and 93% RH for cell temperatures of 80 degrees C and 100 degrees C. (C) 2013 The Electrochemical Society. [DOI: 10.1149/2.088304jes] All rights reserved.
相关推荐
暂无相关推荐
网友评论 请遵循相关法律法规,理性发言
回复
查看更多回复

分享