Cross-linked polybenzimidazoles containing hyperbranched cross-linkers and quaternary ammoniums as high-temperature proton exchange membranes: Enhanced stability and conductivity
作者: Meishao HuTianyun LiSivasubramaniyan NeelakandanLei WangYongming Chen
作者单位: 1Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
2Guangdong Research Center for Interfacial Engineering of Functional Materials, Shenzhen University, Shenzhen, 518060, China
3School of Materials Science and Engineering, Key Laboratory of Polymeric Composite Materials and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou, 510275, China
刊名: Journal of Membrane Science, 2020, Vol.593
来源数据库: Elsevier Journal
DOI: 10.1016/j.memsci.2019.117435
关键词: Fuel cellHigh-temperature proton exchange membranePolybenzimidazoleHyperbranched cross-linkerQuaternary ammonium group
英文摘要: Abstract(#br)High proton conductivity with sufficient stability for phosphoric acid (PA) doped polybenzimidazole membranes is critical for applications in fuel cells. Macromolecular cross-linkers with hyperbranched structures have large volumes and many functional groups, which can not only react with polymer backbones to form multiple cross-linked sites, but also provide favorable conditions for subsequent functional group modifications to regulate the interaction between polymers and PA; however, such cross-linkers are rarely exploited in fuel cells. Herein, a series of cross-linked polybenzimidazole membranes were successfully prepared based on a novel hyperbranched cross-linker and the incorporation of numerous quaternary ammonium groups. These cross-linked polybenzimidazole membranes...
全文获取路径: Elsevier  (合作)
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影响因子:4.093 (2012)

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关键词翻译
关键词翻译
  • conductivity 传导率
  • proton 质子
  • temperature 温度
  • exchange 交换
  • quaternary 第四期
  • stability 稳定性
  • containing 包含的
  • cross 十字
  • linked 连接的