Developing high activity, strong durability and cost‐efficient electrocatalyst for hydrogen evolution reaction (HER) is critical for the sustainable production of hydrogen energy. Herein, we have rationally designed a three‐dimensional (3D) hollow nickel phosphide spheres coupling molybdenum sulfide nanosheets heterogeneous catalyst (Ni 2 P@MoS 2 ). Benefiting from the hollow spherical structure and the coupling effects between MoS 2 and Ni 2 P, the Ni 2 P@MoS 2 shows superior activity for hydrogen generation over a wide pH range. It displays overpotentials of 181, 269 and 535 mV in 1.0 M KOH, 0.5 M H 2 SO 4 and 1.0 M PBS at current density of 10 mA cm ‒2 , respectively. A series of characterizations demonstrate that the strong coupling interaction between Ni 2 P and MoS 2 effectively optimize the electronic structure of the Ni 2 P‐MoS 2 3D/2D interfaces, benefiting for regulating H* adsorption energy. This work offers a novel strategy for enhancing the HER performance of metal phosphide/sulfide catalysts via constructing heterostructural materials with abundant 3D/2D interfaces.

中文翻译：

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MoS2纳米片耦合Ni2P空心微球作为在3D / 2D界面介导的宽pH范围内产生氢的有效电催化剂

开发用于氢析出反应（HER）的高活性，强耐用性和成本效益的电催化剂，对于可持续生产氢能至关重要。在这里，我们合理地设计了一个三维（3D）空心磷化镍球体，耦合了硫化钼纳米片的非均相催化剂（Ni 2 P @ MoS 2）。得益于空心球形结构以及MoS 2和Ni 2 P之间的耦合作用，Ni 2 P @ MoS 2在宽的pH范围内显示出优异的产氢活性。在1.0 M KOH，0.5 MH 2 SO 4和1.0 M PBS中，电流密度分别为10 mA cm ‒2时，它的过电势分别为181、269和535 mV。一系列表征表明，Ni 2 P和MoS 2之间的强耦合相互作用有效地优化了Ni 2 P-MoS 2 3D / 2D界面的电子结构，有利于调节H *吸附能。这项工作提供了一种新颖的策略，可以通过构建具有丰富3D / 2D界面的异质结构材料来增强金属磷化物/硫化物催化剂的HER性能。