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A flexible non-precious metal Fe-N/C catalyst for highly efficient oxygen reduction reaction

机译：柔性非贵金属Fe-N / C催化剂，用于高效氧还原反应

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摘要

A novel, flexible non-precious-metal oxygen reduction reaction catalyst is fabricated by direct pyrolysis of carbon cloth decorated with an iron-coordinated aniline and pyrrole copolymer. The resultant Fe-N/C manifests superior activity, long-term stability in alkaline media and comparable activity in acidic electrolyte. The precursor carbon cloth modified with aniline and pyrrole copolymer provides high densities of carbon, nitrogen and iron-doping sites, which generates a great many active sites. Compared to the Pt/C catalyst, Fe-N/C pyrolyzed at 850 degrees C (Fe-N/C-850) shows excellent activity with onset and half-wave potentials of 17 mV and -174 mV in 0.1 M KOH, which are more activated than an iron-free catalyst (-29 mV and -235 mV) and comparable to those of Pt/C (28 mV and -237 mV) with the same loading. The electrocatalysis and reaction kinetics results demonstrate that Fe-N/C-850 will be a promising catalyst at low cost for applications in fuel cells.
机译：通过用铁配合苯胺和吡咯共聚物装饰的碳布直接热解来制造一种新颖的柔性非珍贵金属氧还原反应催化剂。 得到的Fe-N / C表现出优异的活性，碱性介质中的长期稳定性以及酸性电解质中的可比活性。 用苯胺和吡咯共聚物改性的前体碳布提供了高密度的碳，氮和铁掺杂位点，其产生了众多活跃部位。 与Pt / C催化剂相比，在850℃（Fe-N / C-850）下热解的Fe-N / C显示出优异的活性，具有17 mV和-174mV的起始活性，在0.1M KOH中 比无铁催化剂（-29mV和-235mV）更活泼，并与具有相同负载的Pt / C（28mV和-237mV）相当。 电催化和反应动力学结果表明Fe-N / C-850将以低成本的燃料电池应用是一种承诺的催化剂。

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  • 来源
    《Nanotechnology》 |2019年第14期|共9页
  • 作者

    He Xinping; Xia Yang; Liang Chu; Zhang Jun; Huang Hui; Gan Yongping; Zhao Chun; Zhang Wenkui;

  • 作者单位

    Zhejiang Univ Technol Coll Mat Sci &

    Engn Hangzhou 310014 Zhejiang Peoples R China;

    Zhejiang Univ Technol Coll Mat Sci &

    Engn Hangzhou 310014 Zhejiang Peoples R China;

    Zhejiang Univ Technol Coll Mat Sci &

    Engn Hangzhou 310014 Zhejiang Peoples R China;

    Zhejiang Univ Technol Coll Mat Sci &

    Engn Hangzhou 310014 Zhejiang Peoples R China;

    Zhejiang Univ Technol Coll Mat Sci &

    Engn Hangzhou 310014 Zhejiang Peoples R China;

    Zhejiang Univ Technol Coll Mat Sci &

    Engn Hangzhou 310014 Zhejiang Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect Changchun 130012 Jilin Peoples R China;

    Zhejiang Univ Technol Coll Mat Sci &

    Engn Hangzhou 310014 Zhejiang Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 特种结构材料;
  • 关键词

    iron-coordinated; copolymer modified carbon cloth; electrocatalyst; oxygen reduction reaction; fuel cells;

    机译：铁协调;共聚物改性碳布;电催化剂;氧还原反应;燃料电池;

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