Comprising abundant interfaces, multicomponent heterostructures can integrate distinct building blocks into single entities and yield exceptional functionalities enabled by the synergistic components. Here we report an efficient approach to construct one-dimensional metal/sulfide heterostructures by directly sulfuring highly composition-segregated platinum-nickel nanowires. The heterostructures possess a high density of interfaces between platinum-nickel and nickel sulfide components, which cooperate synergistically towards alkaline hydrogen evolution reaction. The platinum-nickel/nickel sulfide heterostructures can deliver a current density of 37.2 mA cm^-2 at an overpotential of 70 mV, which is 9.7 times higher than that of commercial Pt/C. The heterostructures also offer enhanced stability revealed by long-term chronopotentiometry measurements. The present work highlights a potentially powerful interface-engineering strategy for designing multicomponent heterostructures with advanced performance in hydrogen evolution reaction and beyond.

中文翻译：

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铂-镍/硫化镍界面纳米线的精确调谐，可协同产生氢气。

多组件异质结构包含丰富的接口，可以将不同的构建基块集成到单个实体中，并产生由协同组件实现的出色功能。在这里，我们报告了一种通过直接硫化高度成分分离的铂-镍纳米线来构建一维金属/硫化物异质结构的有效方法。异质结构在铂-镍和硫化镍组分之间具有高密度的界面，它们协同作用于碱性氢放出反应。铂镍/硫化镍异质结构可提供37.2 mA cm ^-2的电流密度在70 mV的超电势下，比商用Pt / C的电势高9.7倍。通过长期计时电位测量，异质结构还提供了增强的稳定性。本工作着重介绍了一种潜在的功能强大的界面工程设计策略，可用于设计在氢析出反应及其他方面具有先进性能的多组分异质结构。