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首页> 外文期刊>RSC Advances >N-Doped carbon supported Co3O4 nanoparticles as an advanced electrocatalyst for the oxygen reduction reaction in Al-air batteries
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N-Doped carbon supported Co3O4 nanoparticles as an advanced electrocatalyst for the oxygen reduction reaction in Al-air batteries

机译：N-掺杂的碳负载的CO3O4纳米颗粒作为氧气电池中的氧还原反应的先进电催化剂

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摘要

Low-cost and high-performance catalysts are highly desirable for the oxygen reduction reaction (ORR) in metal-air batteries. Herein, a Co3O4/N-doped Ketjenblack (Co3O4/N-KB) composite is proposed as a high performance catalyst for Al-air batteries. The synergistic effect between Co3O4 and N-KB enables the Co3O4/N-KB composite to have a much higher cathodic current, a much more positive half-wave potential and more electron transfer in comparison with Co3O4 or N-KB alone. The Co3O4/N-KB composite favors a direct four electron pathway in the ORR process, and its ORR current density even outperforms the commercial Pt/C (20 wt%). Al-air batteries using the as-prepared catalyst in the air electrode were constructed, which displayed a high discharge voltage plateau of similar to 1.52 V, comparable to that of the commercial Pt/C. The developed Co3O4/N-KB composite here could meet the requirements of large-scale application of metal-air batteries due to the much cheaper cobalt source and more economically commercialized carbon source compared to the commercial Pt/C.
机译：金属 - 空气电池中的氧还原反应（ORR）非常希望低成本和高效催化剂。在此，提出了CO 3 O 4 / N掺杂的ketjenblack（CO3O4 / n-Kb）复合材料作为Al-空气电池的高性能催化剂。 Co3O4和N-Kb之间的协同效应使得CO3O4 / N-KB复合材料具有更高的阴极电流，与单独的CO3O4或N-KB相比，更高的阴极电流和更多的电子转移。 CO3O4 / N-KB复合物在ORR工艺中有一种直接的四电子通路，其ORR电流密度甚至优于商用PT / C（20wt％）。构建使用空气电极中的AS制备催化剂的Al-空气电池，其显示出高放电电压高原，其类似于1.52 V，与商业Pt / c的相当。由于与商业PT / C相比，发达的CO3O4 / N-KB复合材料可以满足金属电池的大规模应用要求的大规模应用。

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  • 来源
    《RSC Advances》 |2016年第60期|共8页
  • 作者

    Liu Kun; Zhou Zhi; Wang Haiyan; Huang Xiaobing; Xu Jingyan; Tang Yougen; Li Jingsha; Chu Hailiang; Chen Jiajie;

  • 作者单位

    Cent S Univ Coll Chem &

    Chem Engn Changsha 410083 Peoples R China;

    Hunan Agr Univ Coll Sci Changsha 410128 Hunan Peoples R China;

    Cent S Univ Coll Chem &

    Chem Engn Changsha 410083 Peoples R China;

    Hunan Univ Arts &

    Sci Coll Chem &

    Chem Engn Changde 415000 Peoples R China;

    Cent S Univ Coll Chem &

    Chem Engn Changsha 410083 Peoples R China;

    Cent S Univ Coll Chem &

    Chem Engn Changsha 410083 Peoples R China;

    Cent S Univ Coll Chem &

    Chem Engn Changsha 410083 Peoples R China;

    Guilin Univ Elect Technol Guangxi Key Lab Informat Mat Guilin 541004 Peoples R China;

    Cent S Univ Coll Chem &

    Chem Engn Changsha 410083 Peoples R China;

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