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首页> 外文期刊>Journal of power sources >Nitrogen- and boron-co-doped core-shell carbon nanoparticles as efficient metal-free catalysts for oxygen reduction reactions in microbial fuel cells
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Nitrogen- and boron-co-doped core-shell carbon nanoparticles as efficient metal-free catalysts for oxygen reduction reactions in microbial fuel cells

机译：氮和硼共掺杂的核壳碳纳米颗粒可作为有效的无金属催化剂，用于微生物燃料电池中的氧还原反应

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摘要

The most severe bottleneck hindering the widespread application of fuel cell technologies is the difficulty in obtaining an inexpensive and abundant oxygen reduction reaction (ORR) catalyst. The concept of a heteroatom-doped carbon-based metal-free catalyst has recently attracted interest. In this study, a metal-free carbon nanoparticles-based catalyst hybridized with dual nitrogen and boron components was synthesized to catalyze the ORR in microbial fuel cells (MFCs). Multiple physical and chemical characterizations confirmed that the synthetic method enabled the incorporation of both nitrogen and boron dopants. The electrochemical measurements indicated that the co-existence of nitrogen and boron could enhance the ORR kinetics by reducing the overpotential and increasing the current density. The results from the kinetic studies indicated that the nitrogen and boron induced an oxygen adsorption mechanism and a four-electron-dominated reaction pathway for the as-prepared catalyst that was very similar to those induced by Pt/C. The MFC results showed that a maximum power density of ～642 mW m~(-2) was obtained using the as-prepared catalyst, which is comparable to that obtained using expensive Pt catalyst. The prepared nitrogen- and boron-co-doped carbon nanoparticles might be an alternative cathode catalyst for MFC applications if large-scale applications and price are considered.
机译：阻碍燃料电池技术广泛应用的最严重瓶颈是难以获得廉价且丰富的氧还原反应（ORR）催化剂。杂原子掺杂的碳基无金属催化剂的概念最近引起了人们的兴趣。在这项研究中，与双氮和硼组分杂交的无金属碳纳米颗粒基催化剂被合成来催化微生物燃料电池（MFCs）中的ORR。多种物理和化学表征证实，该合成方法能够掺入氮和硼掺杂剂。电化学测量表明，氮和硼共存可通过降低过电势和增加电流密度来增强ORR动力学。动力学研究的结果表明，氮和硼诱导了所制备催化剂的氧吸附机理和四电子主导的反应路径，与Pt / C诱导的非常相似。 MFC的结果表明，使用所制备的催化剂获得的最大功率密度为〜642 mW m〜（-2），与使用昂贵的Pt催化剂获得的功率密度相当。如果考虑到大规模应用和价格，则制备的氮和硼共掺杂的碳纳米颗粒可能是MFC应用的替代阴极催化剂。

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  • 来源
    《Journal of power sources》 |2014年第25期|344-350|共7页
  • 作者

    Shengkui Zhong; Lihua Zhou; Ling Wu; Lianfeng Tang; Qiyi He; Jalal Ahmed;

  • 作者单位

    Shagang School of Iron and Steel, Soochow University, Suzhou 215021, China;

    Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China;

    Shagang School of Iron and Steel, Soochow University, Suzhou 215021, China;

    Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China;

    Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China;

    Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, South Korea;

  • 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

    Core-shell carbon nanoparticles; Metal-free catalyst; Oxygen reduction reaction; Microbial fuel cell;

    机译：核壳碳纳米粒子;无金属催化剂;氧还原反应;微生物燃料电池;

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