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首页> 外文期刊>Journal of power sources >Increases in the proton conductivity and selectivity of proton exchange membranes for direct methanol fuel cells by formation of nanocomposites having proton conducting channels
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Increases in the proton conductivity and selectivity of proton exchange membranes for direct methanol fuel cells by formation of nanocomposites having proton conducting channels

机译：通过形成具有质子传导通道的纳米复合材料，提高直接甲醇燃料电池的质子传导率和质子交换膜的选择性

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摘要

We explore an approach to effectively enhance the properties of cost-effective hydrocarbon proton-exchange membranes for application in the direct methanol fuel cell (DMFC). This approach utilizes sulfonated silica nanoparticles (SA-SNP) as additives to modify sulfonated poly(arylene ether ether ketone ketone) (SPAEEKK). The interaction between the sulfonic acid groups of SA-SNP and those of SPAEEKK combined with hydrophilic-hydrophobic phase separation induce the formation of proton conducting channels, as evidenced by TEM images, which contribute to increases in the proton conductivity of the SPAEEKK/SA-SNP nanocomposite membrane. The presence of SA-SNP nanoparticles also reduces methanol crossover in the membrane. Therefore, the SPAEEKK/SA-SNP nanocomposite membrane shows a high selectivity, which is 2.79-fold the selectivity of Nafion~® 117. The improved selectivity of the SPAEEKK/SNP nanocomposite membrane demonstrates potential of this approach in providing hydrocarbon-based PEMs as alternatives to Nafion in direct methanol fuel cells.
机译：我们探索一种方法，以有效地提高在直接甲醇燃料电池（DMFC）中应用的具有成本效益的碳氢质子交换膜的性能。该方法利用磺化的二氧化硅纳米粒子（SA-SNP）作为添加剂来改性磺化的聚（亚芳基醚醚酮酮）（SPAEEKK）。 TEM图像证明，SA-SNP的磺酸基团与SPAEEKK的磺酸基团之间的相互作用结合了亲水-疏水相分离作用，从而形成了质子传导通道，这有助于增加SPAEEKK / SA-的质子传导率。 SNP纳米复合膜。 SA-SNP纳米颗粒的存在还减少了膜中的甲醇穿透。因此，SPAEEKK / SA-SNP纳米复合膜显示出高的选择性，是117的2.79倍。SPAEEKK/ SNP纳米复合膜的提高的选择性证明了这种方法在提供烃基PEM方面的潜力直接甲醇燃料电池中Nafion的替代品。

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  • 来源
    《Journal of power sources》 |2009年第1期|206-213|共8页
  • 作者

    Yu-Huei Su; Ying-Ling Liu; Da-Ming Wang; Juin-Yih Lai; Michael D. Guiver; Baijun Liu;

  • 作者单位

    Institute of Polymer Science and Engineering. National Taiwan University, Taipei 104, Taiwan;

    R&D Center for Membrane Technology and Department of Chemical Engineering, Chung Yuan University, Chungli, Taoyuan 320, Taiwan;

    Institute of Polymer Science and Engineering. National Taiwan University, Taipei 104, Taiwan;

    R&D Center for Membrane Technology and Department of Chemical Engineering, Chung Yuan University, Chungli, Taoyuan 320, Taiwan;

    Institute for Chemical Process and Environmental Technology, National Research Council, Ottawa, Ont., Canada K1A 0R6;

    Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    proton exchange membranes; direct methanol fuel cell; poly(arylene ether ether ketone ketone); sulfonated silica nanoparticies;

    机译：质子交换膜直接甲醇燃料电池聚（亚芳基醚醚酮酮）;磺化二氧化硅纳米粒子;

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