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首页> 外文期刊>Electrocatalysis >One-Pot Synthesis of Highly Efficient Carbon-Supported Polyhedral Pt3Ni Alloy Nanoparticles for Oxygen Reduction Reaction
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One-Pot Synthesis of Highly Efficient Carbon-Supported Polyhedral Pt3Ni Alloy Nanoparticles for Oxygen Reduction Reaction

机译：高效碳负载多面体PT3NI合金纳米粒子的一锅合成用于氧还原反应

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摘要

The oxygen reduction reaction (ORR) properties were intensely affected by the facet of electrocatalysts. For example, (111) facet of Pt3Ni alloy has been proved to have excellent ORR electrocatalytic activity. Therefore, it could be very important to synthesize Pt3Ni nanocrystals with large proportion of (111) facet. However, most reported Pt3Ni polyhedron bound by (111) facets were synthesized using capping agents like oleylamine and oleic acid. These organic ligands will hinder the intrinsic ORR performance of catalyst and require tedious process to remove. Here, we report a one-pot synthesis of capping agents free for polyhedron Pt3Ni alloy nanoparticles on carbon (Pt3Ni/C) with large proportion of Pt3Ni (111) facets. The electrocatalysts achieved an enhancement of 224% in mass activity and 8.7-fold specific activity towards ORR in comparison with commercial Pt/C catalyst. The present study provides a simple method for designing highly efficient Pt alloy electrocatalysts.
机译：氧还原反应（ORR）性质受电催化剂的刻面强烈影响。 例如，已证明PT3NI合金的PT3NI合金的刻面具有优异的ORR电催化活性。 因此，合成具有大比例（111）个小平面的PT3NI纳米晶体非常重要。 然而，大多数报道的PT3NI多面体由（111）刻面结合使用（111）刻面，使用封端剂如oleylamine和油酸合成。 这些有机配体将妨碍催化剂的内在型ORR性能，并需要繁琐的方法去除。 在此，我们报告了一种单罐合成的封端剂，用于多层PT3NI合金纳米颗粒在碳（PT3NI / C）上的碳（PT3NI / C），大部分PT3NI（111）刻面。 与商业Pt / C催化剂相比，电催化剂达到了224％的质量活性和8.7倍的特异性活性。 本研究提供了一种设计高效PT合金电催化剂的简单方法。

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  • 来源
    《Electrocatalysis》 |2019年第6期|共8页
  • 作者

    Liu Yongqiang; Chen Hongming; Tian Chongchong; Geng Dongsheng; Wang Dawei; Bai Siriguleng;

  • 作者单位

    Univ Sci &

    Technol Beijing Beijing Key Lab Magnetophotoelect Composite &

    Int Beijing Adv Innovat Ctr Mat Genome Engn Ctr Green Innovat Sch Math &

    Phys Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Beijing Key Lab Magnetophotoelect Composite &

    Int Beijing Adv Innovat Ctr Mat Genome Engn Ctr Green Innovat Sch Math &

    Phys Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Beijing Key Lab Magnetophotoelect Composite &

    Int Beijing Adv Innovat Ctr Mat Genome Engn Ctr Green Innovat Sch Math &

    Phys Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Beijing Key Lab Magnetophotoelect Composite &

    Int Beijing Adv Innovat Ctr Mat Genome Engn Ctr Green Innovat Sch Math &

    Phys Beijing 100083 Peoples R China;

    Peking Univ Sunan Inst Mol Engn Changshu 215500 Jiangsu Peoples R China;

    Inner Mongolia Univ Technol Coll Sci Hohhot 010051 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学动力学、催化作用;
  • 关键词

    Oxygen reduction reaction; Polyhedral Pt3Ni alloy nanoparticles; (111) facet;

    机译：氧还原反应;多面体PT3NI合金纳米粒子;（111）刻面;

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