Three‐Dimensional PdCuRu Alloy Porous Nanosheets as Efficient Electrocatalysts for Hydrogen Evolution Reaction in Varied Electrolytes,ChemElectroChem

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Three‐Dimensional PdCuRu Alloy Porous Nanosheets as Efficient Electrocatalysts for Hydrogen Evolution Reaction in Varied Electrolytes
ChemElectroChem ( IF 3.5 ) Pub Date : 2020-07-10 , DOI: 10.1002/celc.202000764
Mengyu Yuan ₁ , Hui Xu ₁ , Yuan Wang ₁ , Liujun Jin ₁ , Cheng Wang ₁ , Chunyan Chen ₁ , Yong Wang ₁ , Hongyuan Shang ₁ , Yukou Du ₁

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Noble metal materials with favorable electronic and geometric structure are considered as outstanding electrocatalysts for hydrogen evolution reaction (HER). However, it is still a grand challenge to increase the specific surface area of the catalyst to expose more active sites from structural advantages and optimize the adsorption/desorption energy of reaction intermediates. Here, we report the design and fabrication of a three‐dimensional (3D) PdCuRu nanostructure that is assembled by porous nanosheets through a facile wet‐chemical and subsequent chemical etching method. Interestingly, the prepared 3D porous nanostructures not only provide a wealth of surface active centers for reactants, but also provide a lot of ways for mass transport and charge transfer. More importantly, the alloy structure effectively optimizes the electronic structures of Ru and Cu, leading them to be favorable for the adsorption/desorption of H_ads during HER. As a result, the 3D PdCuRu porous nanosheets (PdCuRu PNSs) display excellent electrocatalytic HER performance in both acidic and alkaline media. It is worth mentioning that the 3D PdCuRu PNSs could also show excellent kinetic stability with negligible activity loss representing a new class a class of promising electrocatalysts for HER.

中文翻译：

三维PdCuRu合金多孔纳米片作为在各种电解质中发生氢释放反应的高效电催化剂

具有良好的电子和几何结构的贵金属材料被认为是氢释放反应（HER）的杰出电催化剂。然而，增加催化剂的比表面积以使更多的活性位点因结构优势而暴露并优化反应中间体的吸附/解吸能仍然是一个巨大的挑战。在这里，我们报告设计和制造的三维（3D）PdCuRu纳米结构，它是通过多孔纳米片通过便捷的湿化学法和随后的化学蚀刻方法组装而成的。有趣的是，制备的3D多孔纳米结构不仅为反应物提供了丰富的表面活性中心，而且还提供了许多用于质量传输和电荷转移的方法。更重要的是，HER期间_投放广告。结果，3D PdCuRu多孔纳米片（PdCuRu PNS）在酸性和碱性介质中均显示出出色的电催化HER性能。值得一提的是，3D PdCuRu PNSs还可以表现出出色的动力学稳定性，而活性损失却可以忽略不计，这代表了HER的一类新的有希望的电催化剂。

更新日期：2020-07-30

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