The development of alkaline exchange membrane fuel cell (AEMFC) is limited by the sluggish reaction at the anode. Even precious group metals (PGMs) are not effective hydrogen oxidation reaction (HOR) electrocatalysts in alkaline medium. In this manuscript, the original synthesis of effective HOR electrocatalysts for AEMFC is reported. Here, the limitations of using metal‐organic precursors are described and their replacement with organometallic precursors is proposed. It is shown that completely different nanostructures can be synthesized by the organometallic route, resulting in the formation of NiPd nano‐alloy or Ni@Pd core–shell nanoparticles, instead of Pd@Ni. The presence of both Pd and Ni on the catalyst surface has a drastic effect on its HOR activity, due to a bifunctional electrocatalytic mechanism with hydrogen binding on Pd and OH binding on Ni. The highest activity is measured for NiPd nano‐alloy, whose specific activity reaches and at 0.1 V versus reversible hydrogen electrode at 298 K. These are the highest values reported so far for an NiPd catalyst. By design, the synthetic approach is generic and can be applied to any pair of metals, either PGM or other transition metals, to synthesize alloyed or core–shell electrocatalysts.

中文翻译：

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Pd-Ni核壳纳米粒子的双功能电催化在碱性介质中的氢氧化反应

碱性交换膜燃料电池（AEMFC）的发展受到阳极反应迟缓的限制。在碱性介质中，即使是贵金属（PGM）也不是有效的氢氧化反应（HOR）电催化剂。在此手稿中，报道了用于AEMFC的有效HOR电催化剂的原始合成方法。在此，描述了使用金属有机前体的局限性，并提出了用有机金属前体替代它们的建议。结果表明，可以通过有机金属途径合成完全不同的纳米结构，从而形成NiPd纳米合金或Ni @ Pd核壳纳米粒子，而不是Pd @ Ni。催化剂表面上同时存在Pd和Ni对其HOR活性具有极大的影响，由于双功能电催化机理，氢与Pd结合，OH与Ni结合。对于NiPd纳米合金，其最高活性达到和在0.1V下对在298K可逆氢电极这些都是至今用于NIPD催化剂报道的最高值。通过设计，合成方法是通用的，可应用于任何一对金属（PGM或其他过渡金属）以合成合金或核壳电催化剂。