Herein, the construction of sp-C–P-Cu bridged graphdiyne (GDY)-copper phosphides (Cu_xP) heterointerface structure is described by controlled growth of GDY on the surface of Cu_xP for efficient hydrogen evolution reaction (HER). The experimental results demonstrate that the newly formed sp-C─P bonds at the interfaces between GDY and Cu_xP have the dual roles of promoting faster charge transfer and producing large numbers of new intrinsic active sites, which facilitates the activation and dissociation of H₂O to produce H₂ and greatly enhanced the intrinsic electrocatalytic activity. As expected, the as-synthesized electrocatalyst exhibits excellent activity for hydrogen evolution reaction (HER) with overpotentials of 44 mV at 10 mA cm⁻², which is smaller than that of pure Cu_xP and Cu foam electrocatalysts. These results correlate interface structure and HER activity and provide new insights into the design and synthesis of high-performance electrocatalysts.

中文翻译：

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通过 sp-C-P-Cu 异质界面的原位生长高效制氢


在此，sp-C-P-Cu 桥式石墨炔 （GDY）-磷化铜 （Cu_xP） 异质界面结构的构建是通过 GDY 在 Cu_xP 表面的受控生长来描述的，以实现高效的析氢反应 （HER）。实验结果表明，GDY 和 Cu_xP 界面处新形成的 sp-C─P 键具有促进更快的电荷转移和产生大量新的本征活性位点的双重作用，促进了 H₂O 的活化和解离产生 H₂，大大增强了本征电催化活性。正如预期的那样，合成的电催化剂表现出优异的析氢反应 （HER） 活性，在 10 mA ^cm-2 处的过电位为 44 mV，小于纯 Cu_xP 和 Cu 泡沫电催化剂的过电位。这些结果将界面结构和 HER 活性相关联，并为高性能电催化剂的设计和合成提供了新的见解。