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The effect of block copolymer additives for a highly active polymeric metal-free oxygen reduction electrode

机译:嵌段共聚物添加剂对高活性聚合物无金属氧还原电极的影响

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摘要

Electrocatalytic materials play a critical role in emerging clean energy technologies such as batteries and fuel cells. Herein, we report the fabrication of a unique conducting polymer alloy thin film electrocatalyst based on poly(3,4-ethylenedioxythiophene) (PEDOT) and a polymeric additive, polyethylene glycol-polydimethylsiloxane-polyethylene glycol. These polymeric films displayed electrocatalytic activity for the Oxygen Reduction Reaction (ORR) higher than that of platinum or other polymeric electrodes. Furthermore, the metal-free polymeric electrodes were not susceptible to 'poisoning' when exposed to methanol. The fabrication parameters affecting the ORR performance of the polymeric electrodes and the mechanism of the improvement of the ORR catalysis were comprehensively investigated and benchmarked against commercial Pt electrodes. The application of the conducting polymer alloy electrode in a zinc-air battery demonstrated high power output and stable performance.
机译:电催化材料在新出现的清洁能源技术(如电池和燃料电池)中发挥着关键作用。 在此,我们报告了基于聚(3,4-亚乙二氧基噻吩)(PEDOT)和聚合物添加剂,聚乙二醇 - 聚二甲基硅氧烷 - 聚乙二醇的独特导电聚合物合金薄膜电催化剂的制备。 这些聚合物薄膜显示出高于铂或其他聚合物电极的氧还原反应(ORR)的电催化活性。 此外,在暴露于甲醇时,无金属聚合物电极不易受到“中毒”。 影响聚合物电极ORR性能的制造参数及其改善rα催化的机制被全面地研究并与商业PT电极进行基准。 在锌 - 空气电池中的电导聚合物合金电极在锌 - 空气电池中的应用展示了高功率输出和稳定的性能。

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  • 来源
    《RSC Advances》 |2016年第34期|共6页
  • 作者单位

    Univ Bath Dept Chem Claverton Down Bath BA2 7AY Avon England;

    Univ Bath Dept Chem Claverton Down Bath BA2 7AY Avon England;

    Univ Adelaide Sch Chem Engn Adelaide SA 5005 Australia;

    Univ S Australia Future Ind Inst Mawson Lakes SA 5095 Australia;

    Univ S Australia Future Ind Inst Mawson Lakes SA 5095 Australia;

    Univ S Australia Future Ind Inst Mawson Lakes SA 5095 Australia;

    Univ S Australia Future Ind Inst Mawson Lakes SA 5095 Australia;

    Univ Adelaide Sch Chem Engn Adelaide SA 5005 Australia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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