化工学报 ›› 2016, Vol. 67 ›› Issue (1): 358-367.DOI: 10.11949/j.issn.0438-1157.20150520

• 材料化学工程与纳米技术 • 上一篇    

磷酸化二氧化硅填充磺化聚醚醚酮质子交换膜的制备及表征

吴洪1,2,3, 杨昊1,2, 赵宇宁2, 李震1,2, 姜忠义1,2   

  1. 1 天津化学化工协同创新中心, 天津 300072;
    2 天津大学化工学院绿色化学合成与转化教育部重点实验室, 天津 300072;
    3 天津市膜科学与海水淡化技术重点实验室, 天津 300072
  • 收稿日期:2015-04-24 修回日期:2015-06-05 出版日期:2016-01-05 发布日期:2016-01-05
  • 通讯作者: 姜忠义
  • 基金资助:

    国家杰出青年科学基金项目(21125627);新世纪优秀人才支持计划项目(NCET-10-0623);高等学校学科创新引智计划项目(B06006)。

Preparation and characterization of proton exchange membranes based onsulfonated poly(ether ether ketone) doped with phosphorylated mesoporoussilica submicrospheres

WU Hong1,2,3, YANG Hao1,2, ZHAO Yuning2, LI Zhen1,2, JIANG Zhongyi1,2   

  1. 1 Collaborative Innovation Center of Chemical Science and Engineering Tianjin, Tianjin 300072, China;
    2 Key Laboratory for Green Chemical Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
    3 Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, China
  • Received:2015-04-24 Revised:2015-06-05 Online:2016-01-05 Published:2016-01-05
  • Supported by:

    supported by the National Science Fund for Distinguished Young Scholars (21125627), the Program for New Century Excellent Talents in University (NCET-10-0623) and the Programme of Introducing Talents of Discipline to Universities (B06006).

摘要:

制备了两种磷酸化改性的介孔二氧化硅亚微米球形颗粒,分别为仅外表面接枝磷酸根基团的颗粒(PMPS-Ⅰ)和内外表面均接枝磷酸根基团的颗粒(PMPS-Ⅱ)。颗粒具有均一的尺寸和规则排布的六面体一维贯通孔道。将制备的二氧化硅颗粒与磺化聚醚醚酮(SPEEK)溶液共混制备杂化膜。与填充PMPS-Ⅰ的杂化膜相比,填充PMPS-Ⅱ的杂化膜显示出较好的质子传导性能。当PMPS-Ⅱ的填充量为5%(质量)时,杂化膜在60℃、100%相对湿度下最高质子传导率为0.241 S·cm-1。研究结果表明,连续贯通的质子传递通道有助于提高杂化膜的质子传导率。

关键词: 燃料电池, 膜, 质子传导率, 甲醇渗透率, 磷酸化, 二氧化硅

Abstract:

Two kinds of phosphorylated mesoporous silica submicrospheres were prepared. The phosphoric acid groups ( PO3H2) were grafted either only on the particle outer surface (PMPS-Ⅰ) or on both the outer surface and the inner pore walls (PMPS-Ⅱ). All the submicrospheres exhibited a uniform particle size and possessed well-aligned one-dimensional hexahedral pores. Hybrid membranes were fabricated by directly blending silica with the sulfonated poly(ether ether ketone) (SPEEK) solutions. The hybrid membranes doped with PMPS-Ⅱ exhibited higher proton conductivity compared to the ones with PMPS-Ⅰ. The highest proton conductivity was 0.241 S·cm-1 at 60℃ and 100% relative humidity (RH) for the hybrid membrane with 5% (mass) of PMPS-Ⅱ. The experimental results indicated that continuous proton conduction channels were advantageous for the enhancement of proton conductivity of the hybrid membranes.

Key words: fuel cell, membrane, proton conductivity, methanol permeability, phosphorylated, silica

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