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首页> 外文期刊>RSC Advances >Pyridinic and pyrrolic nitrogen-rich ordered mesoporous carbon for efficient oxygen reduction in microbial fuel cells
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Pyridinic and pyrrolic nitrogen-rich ordered mesoporous carbon for efficient oxygen reduction in microbial fuel cells

机译：吡啶型和吡咯氮富含型介孔碳，用于微生物燃料电池的有效氧气减少

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摘要

Non-noble cathode catalysts with high performance and low cost are vital for large-scale applications of microbial fuel cell (MFC) technology. In this study, pyridinic and pyrrolic nitrogen-rich ordered mesoporous carbon (PPN-OMC) synthesized by a facile strategy were successfully applied as cathode catalysts in MFCs. In MFCs with the currently used material, the maximum power density is 1420 + 15 mW m(-2), which is comparable to a conventional platinum catalyst (Pt/C, 1425 +/- 15 mW m(-2)), and the stability of the power output is even better. Mechanism exploration for efficient and stable power generation by electrochemical measurements revealed that the resulting PPN-OMC catalyst displayed superior electrocatalytic activity (nearly 100% of a four-electron oxygen reduction reaction (ORR) pathway) and durability (nearly no activity change after 100 000 potential cycles) for ORR in a neutral phosphate buffer solution (PBS). Further characterization of PPN-OMC implied that the existence of nitrogen substitution with high pyridinic and pyrrolic ratios of 39.8% and 35.1% and a large specific surface area of 1160 m(2) g(-1) benefitted the electrocatalytic activity and durability. MFCs with the PPN-OMC catalyst produced power much less expensively than those with Pt/C, indicating that the present PPN-OMC material might be used as an excellent alternative to Pt/C in MFCs.
机译：具有高性能和低成本的非惰性阴极催化剂对于微生物燃料电池（MFC）技术的大规模应用至关重要。在该研究中，通过容易策略合成的吡啶碱和富含富氮的有序的介孔碳（PPN-OMC）被成功地应用于MFC中的阴极催化剂。在具有当前使用的材料的MFC中，最大功率密度为1420 + 15mW m（-2），其与常规铂催化剂（Pt / c，1425 +/- 15mm（-2））相当，和功率输出的稳定性更好。电化学测量有效和稳定发电的机制探讨显示所得的PPN-OMC催化剂显示出优异的电催化活性（近100％的四电子氧还原反应（ORR）途径）和耐久性（在100 000后几乎没有活性变化在中性磷酸盐缓冲溶液（PBS）中的ORR潜在循环。 PPN-OMC的进一步表征暗示，具有39.8％和35.1％的高吡啶和吡啶率和35.1％的氮置换和1160μm（2 )g（-1）的大的比表面积受益于电催化活性和耐久性。具有PPN-OMC催化剂的MFC比具有PT / C的PT / C的低量产生的功率，表明本发明的PPN-OMC材料可用作MFC中的PT / C的优异替代方案。

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  • 来源
    《RSC Advances》 |2017年第24期|共9页
  • 作者

    Feng Leiyu; Chen Xutao; Cao Yue; Chen Yunzhi; Wang Feng; Chen Yinguang; Liu Yin;

  • 作者单位

    Tongji Univ Sch Environm Sci &

    Engn State Key Lab Pollut Control &

    Resources Reuse Shanghai 200092 Peoples R China;

    Tongji Univ Sch Environm Sci &

    Engn State Key Lab Pollut Control &

    Resources Reuse Shanghai 200092 Peoples R China;

    Tongji Univ Sch Environm Sci &

    Engn State Key Lab Pollut Control &

    Resources Reuse Shanghai 200092 Peoples R China;

    Tongji Univ Sch Environm Sci &

    Engn State Key Lab Pollut Control &

    Resources Reuse Shanghai 200092 Peoples R China;

    Tongji Univ Sch Environm Sci &

    Engn State Key Lab Pollut Control &

    Resources Reuse Shanghai 200092 Peoples R China;

    Tongji Univ Sch Environm Sci &

    Engn State Key Lab Pollut Control &

    Resources Reuse Shanghai 200092 Peoples R China;

    China Natl Petr Corp Bohai Drilling Engn Co Ltd Tinajin 300457 Peoples R China;

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