›› 2015, Vol. 66 ›› Issue (S1): 237-241.DOI: 10.11949/j.issn.0438-1157.20150362

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Synthesis and characterization of ion exchange capacity controlled and self-crosslinked anion exchange membranes

ZHANG Xuefei1,2, WANG Shubo2, FEI Zhejun2, LI Weiwei2, ZHAO Yang2, XIE Xiaofeng2, QI Shicheng1, LÜ Yafei1   

  1. 1 College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
    2 Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
  • Received:2015-03-20 Revised:2015-03-27 Online:2015-06-30 Published:2015-06-30
  • Supported by:
    supported by the National High Technology Research and Development Program of China (2012AA051201) and the National Basic Research Program of China( 2012CB215505).

离子交换容量可控自交联型阴离子交换膜的制备

张雪飞1,2, 王树博2, 费哲君2, 李薇薇2, 赵阳2, 谢晓峰2, 齐士成1, 吕亚非1   

  1. 1 北京化工大学材料科学与工程学院, 北京 100029;
    2 清华大学核能与新能源技术研究院, 北京 100084
  • 通讯作者: 齐士成, 谢晓峰
  • 基金资助:
    国家高技术研究发展计划项目(2012AA051201);国家重点基础研究发展计划项目( 2012CB215505)。

Abstract: Functionalized fluorinated poly (arylene ether oxadiazole) (FPAEO) based cross-linked anion exchange membranes (AEMs) with bifunctional agents were prepared via copolymerization, bromination and solution casting using a thermal cross-linking method. FPAEO-TM synthesized via copolymerization of 4, 4'-isopropylidenebis (2, 6-dimethylphenol) (TM-BPA) and 2, 5-bis(2, 3, 4, 5, 6-pentafluorophenyl)-1, 3, 4- oxadiazole(FPOx) was brominated by N-bromosuccinimide (NBS), thereby avoiding chloromethylation, which required carcinogenic reagents. 1-vinylimidazole acted as a bifunctional agent and played two roles: it served as an ion exchange functional group which provided membranes high conductivity, or as a crosslinking agent to improve the membranes' characteristics. The mambrane's conductivity is 9.02×10-2 S·cm-1 at 80℃ and methanol permeability is 1.89×10-7 cm2·s-1(20℃). Membranes had the potential to be used in alkaline fuel cell alkaline (AFC).

Key words: electrolytes, self-cross-linking, bifunctional agent, permeability, fuel cells

摘要: N-溴代丁二酰亚胺(NBS)为溴化试剂, 对十氟 二唑与四甲基双酚A(TM-BPA)聚合的聚合物主链进行溴化, 随后以N-乙烯基咪唑作为双功能化试剂进行功能化, 制备了含有双功能化试剂的氟化聚 二唑芳醚阴离子交换膜。其中, 功能化试剂(作为离子交换的功能基传导离子及作为膜内分子的交联点)改善膜物理性质。制备的阴离子交换膜在80℃下的离子传导率为9.02×10-2 S·cm-1, 甲醇渗透率为1.89×10-7 cm2·s-1(20℃), 在碱性燃料电池中具有应用潜力。

关键词: 电解质, 自交联, 双功能化试剂, 渗透率, 燃料电池

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