Abstract Pt based catalysts with multi-component is widely used to improve the electrocatalytic ability in alcohol oxidation, however, it is still big challenge to maximize the synergies of different component. Herein, Pt/N-rGO/Nb4N5 composites with multilayered structure were prepared, with nitrogen doped reduced graphene oxide (N-rGO) layer covered on Nb4N5 sheet and Pt nanoparticles selective loaded on the interface of Nb4N5 and N-rGO. Furthermore, N-rGO was confirmed to act as the connector between Pt and Nb4N5, ascribed to the Nb4N5–N-rGO-Pt bridge via N-doping of graphene and partial oxidation of Pt. By comparison, Pt/N-rGO/Nb4N5-10 composite showed the best distribution of N-doped rGO in the gap between Pt nanoparticles and Nb4Nb5 sheet, as the ratio of urea and NbCl5 was 10. Accordingly, Pt/N-rGO/Nb4N5-10 electrode exhibited the optimal catalytic activity and durability for multiple alcohol oxide in acid, such as methanol, ethanol, and ethylene glycol, since maximum ternary synergy was achieved by the stable multilayered structure, involving the highest ESCAs due to more exposed active sites of Pt nanoparticles, the best electrical conductivity ascribed to the incorporation of N-rGO, and excellent CO tolerance because of the efficient activation of water on Nb4N5 and N-rGO.

中文翻译：

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用于促进醇氧化的具有多层结构和三元协同作用的 Pt/N-rGO/Nb4N5 电催化剂

摘要 多组分Pt基催化剂被广泛用于提高醇氧化的电催化能力，但如何最大限度地发挥不同组分的协同作用仍然是一个很大的挑战。在此，制备了具有多层结构的 Pt/N-rGO/Nb4N5 复合材料，氮掺杂还原氧化石墨烯 (N-rGO) 层覆盖在 Nb4N5 片上，Pt 纳米颗粒选择性负载在 Nb4N5 和 N-rGO 的界面上。此外，N-rGO 被证实充当 Pt 和 Nb4N5 之间的连接器，归因于 Nb4N5-N-rGO-Pt 桥通过石墨烯的 N 掺杂和 Pt 的部分氧化。相比之下，当尿素和 NbC​​l5 的比例为 10 时，Pt/N-rGO/Nb4N5-10 复合材料在 Pt 纳米颗粒和 Nb4Nb5 片之间的间隙中表现出最佳的 N 掺杂 rGO 分布。因此，