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Polyaniline and iron based catalysts as air cathodes for enhanced oxygen reduction in microbial fuel cells

机译：聚苯胺和铁基催化剂作为用于增强微生物燃料电池的氧气减少的空气阴极

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摘要

The catalyst for oxygen reduction in a cathode is vital for power production in microbial fuel cells (MFCs). In this study, non-precious metal catalysts were prepared by a high-temperature treatment of the iron containing polyaniline as both nitrogen and carbon precursor. These catalysts showed very positive onset potentials and less than 3% yield of hydrogen peroxide in the whole potential range, which matched the state-of-the-art Pt/C. The MFC with a bare cathode only produced a maximum power density of 1.32 W m(-3), while the MFCs with a PANI(900), PANI-Fe-700, and PANI-Fe-900 cathode had a maximum power density of 3.00 W m(-3), 7.45 W m(-3), and 12.54 W m(-3), respectively. Physical and chemical characterizations of the catalysts indicated that iron coordinated with pyridinic nitrogen hosted in micropores was responsible for the high catalytic activity. These results demonstrate that these catalysts are excellent cathodes for MFCs due to their high catalytic activity, strong stability and low cost.
机译：阴极中氧气还原的催化剂对于微生物燃料电池（MFC）中的电力产生至关重要。在该研究中，通过含有聚苯胺的铁作为氮和碳前体的高温处理来制备非贵金属催化剂。这些催化剂在整个潜在范围内显示出非常正发病潜力和小于3％的过氧化氢产率，其匹配最先进的Pt / c。具有裸阴极的MFC仅产生1.32 W m（-3）的最大功率密度，而带有PANI（900），PANI-FE-700和PANI-FE-900阴极的MFC具有最大功率密度3.00 W m（-3），7.45 W m（-3）和12.54 W m（-3）。催化剂的物理和化学表征表明，与微孔中宿主的吡啶氮配位的铁负责高催化活性。这些结果表明，由于其高催化活性，强稳定性和低成本，这些催化剂是MFC的优异阴极。

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  • 来源
    《RSC Advances》 |2015年第97期|共7页
  • 作者

    Tang Xinhua; Li Haoran; Du Zhuwei; Ng How Yong;

  • 作者单位

    Natl Univ Singapore Dept Civil &

    Environm Engn Ctr Water Res Singapore 117576 Singapore;

    Chinese Acad Sci Inst Proc Engn Natl Key Lab Biochem Engn Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Proc Engn Natl Key Lab Biochem Engn Beijing 100190 Peoples R China;

    Natl Univ Singapore Dept Civil &

    Environm Engn Ctr Water Res Singapore 117576 Singapore;

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  • 正文语种 eng
  • 中图分类 化学;
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