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首页> 外文期刊>Applied Surface Science >Porous carbon codoped with inherent nitrogen and externally embedded cobalt nanoparticles as a high-performance cathode catalyst for microbial fuel cells
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Porous carbon codoped with inherent nitrogen and externally embedded cobalt nanoparticles as a high-performance cathode catalyst for microbial fuel cells

机译：与固有氮和外部嵌入的钴纳米粒子共掺杂的多孔碳，可作为微生物燃料电池的高性能阴极催化剂

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摘要

High-performance porous carbon embedded cobalt nanoparticles derived from chitosan, which is applied to microbial fuel cell as cathode catalyst, is prepared using one-step high-temperature calcining method. The nitrogenous porous carbon embedded cobalt nanoparticles treated at 800 degrees C (Co/N-C-800) is a high-efficiency electrocatalytic material due to its low electron transfer resistance and high exchange current density. The maximum power density of Co/N-C-800 is 1738 +/- 40 mW.m(-2), which is 44.5% higher than that of PVC (1203 +/- 18 mW.m(-2)). In fact, the high specific surface area of 335.08 m(2).g(-1) for the porous carbon can provide an adequate amount of oxygen and exposed active sites that contribute to the oxygen reduction reaction. Moreover, the graphitized carbon, graphitic nitrogen and cobalt nanoparticles are all involved in the improvement of oxygen reduction reaction performance. In brief, porous carbon with external cobalt nanoparticles is a promising catalytic cathode due to its low cost, facile synthesis and excellent performance.
机译：采用一步法高温煅烧法制备了壳聚糖衍生的高性能多孔碳嵌埋钴纳米粒子，该纳米粒子被应用于微生物燃料电池中作为阴极催化剂。在800摄氏度（Co / N-C-800）下处理的含氮多孔碳埋入钴纳米颗粒（Co / N-C-800）由于其低电子传递阻力和高交换电流密度而成为一种高效电催化材料。 Co / N-C-800的最大功率密度为1738 +/- 40 mW.m（-2），比PVC（1203 +/- 18 mW.m（-2））高44.5％。实际上，多孔碳的高比表面积335.08 m（2）.g（-1）可以提供足够量的氧气和暴露的活性部位，这些部位有助于氧气还原反应。此外，石墨化碳，石墨氮和钴纳米颗粒都参与了氧还原反应性能的改善。简而言之，具有外部钴纳米颗粒的多孔碳由于其低成本，易于合成和优异的性能而成为有希望的催化阴极。

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  • 来源
    《Applied Surface Science》 |2020年第1期|144547.1-144547.9|共9页
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  • 作者单位

    Nankai Univ Coll Environm Sci & Engn Tianjin 300071 Peoples R China|Nankai Univ Tianjin Key Lab Environm Technol Complex Trans Me Tianjin Key Lab Environm Remediat & Pollut Contro MOE Key Lab Pollut Proc & Environm Criteria Tianjin 300071 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Microbial fuel cell; Cobalt nanoparticles; N-doped carbon; Graphitization; Oxygen reduction reaction;

    机译：微生物燃料电池;钴纳米颗粒;氮掺杂碳石墨化氧还原反应;

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