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Bimetallic carbide of Co3W3C enhanced non-noble-metal catalysts with high activity and stability for acidic oxygen reduction reaction

机译:CO3W3C的双金属碳化合物增强的非贵金属催化剂具有高活性和稳定性的酸性氧还原反应

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摘要

A bimetallic carbide enhanced nitrogen/phosphor co-doped graphite nanocomposite (Co3W3C/NPG) is proposed for the first time as a highly active and stable non-noble-metal catalyst for the oxygen reduction reaction (ORR). The newly multi-component Co3W3C/NPG catalysts presented a high on-set potential of 0.92 V and little decreased half-wave potential of 5 mV after 8000 cycles in the O-2-saturated 0.1 M HClO4 electrolyte. The electron transfer number was calculated to be above 3.9 before and after 8000 cycles, indicating that the Co3W3C/NPG catalyst behaves as a steady 4e oxygen reductant in acidic medium.
机译:首次提出了一种双金属碳化物增强氮/磷光体共掺杂石墨纳米复合材料(CO3W3C / NPG),作为用于氧还原反应(ORR)的高活性和稳定的非贵金属催化剂。 新多组分CO3W3C / NPG催化剂在O-2饱和0.1M HCLO4电解质中呈现为0.92V的高齐全电位,在8000次循环后,5mV的半波电位几乎没有降低。 计算电子转移数在8000次循环之前和之后高于3.9,表明CO3W3C / NPG催化剂的表现为酸性介质中的稳定4e氧还原剂。

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  • 来源
    《RSC Advances》 |2018年第22期|共8页
  • 作者单位

    Guangdong Univ Petrochem Technol Sch Chem Engn Technol Res Ctr Petrochem Resource Cleaner Utiliz Maoming 525000 Peoples R China;

    Guangdong Univ Petrochem Technol Sch Chem Engn Technol Res Ctr Petrochem Resource Cleaner Utiliz Maoming 525000 Peoples R China;

    Guangdong Univ Petrochem Technol Sch Chem Engn Technol Res Ctr Petrochem Resource Cleaner Utiliz Maoming 525000 Peoples R China;

    Guangdong Univ Petrochem Technol Sch Chem Engn Technol Res Ctr Petrochem Resource Cleaner Utiliz Maoming 525000 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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