College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu 215123, China.
Department of Physics and Astronomy, California State University, Northridge, California 91330, USA.
Nat Commun. 2017 Feb 27;8:14580. doi: 10.1038/ncomms14580.
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 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.
包含丰富界面的多组分异质结构可以将不同的构建块集成到单个实体中，并通过协同组件产生特殊的功能。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。该异质结构具有铂-镍和镍硫化物成分之间高密度的界面，协同作用有利于碱性析氢反应。在过电势为 70 mV 时，铂-镍/镍硫化物异质结构的电流密度可达 37.2 mA cm，是商业 Pt/C 的 9.7 倍。通过长时间恒电流电位测量也证明了该异质结构具有增强的稳定性。本工作突出了一种潜在的强大的界面工程策略，用于设计在析氢反应及其他方面具有先进性能的多组分异质结构。
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