The highly active, selective and stable anode electrocatalysts for the ethanol oxidation reaction (EOR) are extremely desirable for the application of direct ethanol fuel cells (DEFCs). Herein, one-dimensional Au core@AuPtRh alloy shell nanowires (Au@AuPtRh CS-NWs) with long aspect ratio and cross-linked network architecture are synthesized. For the EOR, Au@AuPtRh CS-NWs display higher peak current density, better resistance to CO poisoning and more lasting stability compared with Au@AuPt CS-NWs and commercial Pt black electrocatalyst, which can be attributed to the trimetallic synergistic effect between the Au, Pt and Rh atoms. Specifically, the Rh can promote the C–C bonds and adsorb OH while Au can change the electronic structure of Pt, endowing Pt with a high anti-poisoning ability to CO and promoting the complete oxidation of various C1 intermediate to CO. This work provides an effective strategy for the rational construction of high-performance Pt-based EOR electrocatalysts by optimizing composition, morphology and architecture.

中文翻译：

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用于乙醇氧化的金核@AuPtRh合金壳纳米线


用于乙醇氧化反应（EOR）的高活性、选择性和稳定的阳极电催化剂对于直接乙醇燃料电池（DEFC）的应用来说是非常理想的。在此，合成了具有长纵横比和交联网络结构的一维金核@AuPtRh合金壳纳米线（Au@AuPtRh CS-NWs）。对于EOR，与Au@AuPt CS-NWs和商业Pt黑电催化剂相比，Au@AuPtRh CS-NWs表现出更高的峰值电流密度、更好的抗CO中毒能力和更持久的稳定性，这可以归因于Au@AuPtRh CS-NWs之间的三金属协同效应Au、Pt 和 Rh 原子。具体来说，Rh可以促进C-C键并吸附OH，而Au可以改变Pt的电子结构，赋予Pt较高的抗CO中毒能力，促进各种C1中间体完全氧化为CO。这项工作提供了通过优化组成、形貌和结构，合理构建高性能 Pt 基 EOR 电催化剂的有效策略。