• 文献标题:   Fabrication of High-Alkaline Stable Quaternized Poly(arylene ether ketone)/Graphene Oxide Derivative Including Zwitterion for Alkaline Fuel Cells
  • 文献类型:   Article
  • 作  者:   HA LEE K, CHU JY, KIM AR, YOO DJ
  • 作者关键词:   graphene oxide derivative, zwitterion, alkaline stability, ion conductivity, composite membrane
  • 出版物名称:   ACS SUSTAINABLE CHEMISTRY ENGINEERING
  • ISSN:   2168-0485
  • 通讯作者地址:  
  • 被引频次:   13
  • DOI:   10.1021/acssuschemeng.1c01978 EA JUN 2021
  • 出版年:   2021

▎ 摘  要

Anion-exchange membrane fuel cell (AEMFC) systems have emerged as a promising alternative for proton-exchange membrane due to their reasonable manufacturing cost and fast oxidation-reduction reactions. But, polymer backbone with ether linker-based poly arylene ether is quickly decomposed in high alkaline media, limiting the commercialization possibilities. Herein, a series of anion-exchange composite membranes having a graphene oxide derivative [graphene oxide linked with methyl orange (GO-MO) containing zwitterion] has been prepared for an anion-exchange membrane with improved ion conductivity and excellent alkaline stability. Here, the compositional ratio of quaternized poly(arylene ether ketone)@GO-MO was optimized with regard to dimensional properties and chemical stability. In particular, QPAEK@GO-MO 0.7 wt % exhibited the highest ion conductivity of 118.5 mS cm(-1) with suitable dimensional stability, and peak power density of a membrane electrode assembly (MEA) based upon QPAEK@GO-MO 0.7 wt % reached 303.2 mW cm(-2) at 60 degrees C in an H-2/O-2 fuel cell test. Moreover, the alkaline stability of composite membranes shows to be considerably stable in high alkaline concentrations. This work provides a new strategy for fabricating the composite membrane introducing GO derivative including zwitterion for potential application of AEMFCs.