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Palladium alloys used as electrocatalysts for the oxygen reduction reaction

机译:钯合金用作氧还原反应的电催化剂

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摘要

Palladium-based alloy materials as cathodes for the reduction of oxygen are regarded as potential substitutes for platinum-based catalysts in fuel cells. In this work, we present a scientometric analysis and critically review the use of Pd alloys for the oxygen reduction reaction (ORR). Through scientometric analysis, publication information, research fronts and hotspots are identified. For the critical review, reaction mechanisms in different media are discussed, with the aid of volcano plots to show the general principles for catalyst modifications to maximise the ORR. Influencing factors, including alloying, structure, strain and ligands, particle size, crystal facets and dealloying are considered with a view to informing the theoretical feasibility to enhance the ORR activity. In addition, Pd-based alloys synthesized by different methods are presented and compared in terms of ORR activities. Future research directions are discussed and possible approaches to mass production for industrialization are also proposed.
机译:钯基合金材料作为减少氧气的阴极被认为是燃料电池中铂类催化剂的潜在替代品。在这项工作中,我们提出了一种科学计量分析,并重要地回顾了Pd合金对氧还原反应的使用(ORR)。通过科学计量分析,识别出版信息,研究前沿和热点。对于批判性评审,讨论了不同培养基中的反应机制,借助火山图展示了催化剂修饰的一般原理,以最大化ORR。影响因素,包括合金,结构,菌株和配体,粒度,晶套和造成的易解,以便通知理论可行性以增强ORR活性。此外,通过不同方法合成的Pd基合金,并在ORR活动方面进行比较。还提出了未来的研究方向,并提出了对工业化的批量生产途径。

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  • 来源
    《Energy & environmental science》 |2021年第5期|2639-2669|共31页
  • 作者单位

    UCL Dept Chem Christopher Ingold Lab 20 Gordon St London WC1H 0AJ England;

    Univ Lincoln Sch Chem Lincoln LN6 7TS England;

    Univ Coll London UCL Dept Chem Engn Electrochem Innovat Lab EIL London WC1E 7JE England;

    Univ Coll London UCL Dept Chem Engn Electrochem Innovat Lab EIL London WC1E 7JE England;

    UCL Dept Chem Christopher Ingold Lab 20 Gordon St London WC1H 0AJ England|Univ Lincoln Sch Chem Lincoln LN6 7TS England|Univ Coll London UCL Dept Chem Engn Electrochem Innovat Lab EIL London WC1E 7JE England;

    Chinese Acad Sci Fujian Inst Res Struct Matter State Key Lab Struct Chem Fuzhou 350002 Fujian Peoples R China;

    UCL Dept Chem Christopher Ingold Lab 20 Gordon St London WC1H 0AJ England;

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