Boron Nanosheet-Supported Rh Catalysts for Hydrogen Evolution: A New Territory for the Strong Metal-Support Interaction Effect

IF 31.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Nano-Micro Letters Pub Date : 2021-06-08 DOI:10.1007/s40820-021-00662-y

Keng Chen, Zeming Wang, Liang Wang, Xiuzhen Wu, Bingjie Hu, Zheng Liu, Minghong Wu

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引用次数: 33

Abstract

High-efficiency electrochemical hydrogen evolution reaction (HER) offers a promising strategy to address energy and environmental crisis. Platinum is the most effective electrocatalyst for the HER. However, challenging scarcity, valuableness, and poor electrochemical stability still hinder its wide application. Here, we designed an outstanding HER electrocatalyst, highly dispersed rhodium (Rh) nanoparticles with an average diameter of only 3?nm supported on boron (B) nanosheets. The HER catalytic activity is even comparable to that of commercial platinum catalysts, with an overpotential of only 66?mV in 0.5?M H₂SO₄ and 101?mV in 1?M KOH to reach the current density of 10?mA?cm^?2. Meanwhile, the catalyst exhibited impressive electrochemical durability during long-term electrochemical processes in acidic and alkaline media, even the simulated seawater environment. Theoretical calculations unraveled that the structure–activity relationship between B(104) crystal plane and Rh(111) crystal plane is beneficial to the release of hydrogen, and surface O plays a vital role in the catalysis process. Our work may gain insights into the development of supported metal catalysts with robust catalytic performance through precise engineering of the strong metal-supported interaction effect.

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硼纳米片负载的Rh析氢催化剂:强金属-负载相互作用的新领域

高效的电化学析氢反应(HER)为解决能源和环境危机提供了一种很有前景的策略。铂是最有效的HER电催化剂。然而，其稀缺性、价值性和电化学稳定性差等问题仍然阻碍了其广泛应用。在这里，我们设计了一种出色的HER电催化剂，高度分散的铑(Rh)纳米颗粒，平均直径仅为3?硼(B)纳米片。HER的催化活性甚至可与商用铂催化剂相媲美，过电位仅为66?mV在0.5?H2SO4和101?mV / 1?M KOH达到10ma cm²的电流密度。同时，该催化剂在酸性和碱性介质中，甚至在模拟海水环境中，都表现出良好的电化学耐久性。理论计算表明，B(104)晶面和Rh(111)晶面之间的构效关系有利于氢的释放，而O表面在催化过程中起着至关重要的作用。我们的工作可能通过对强金属负载相互作用效应的精确工程设计，为开发具有强大催化性能的负载金属催化剂提供见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

42.40

自引率

4.90%

发文量

715

审稿时长

13 weeks

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary and open-access journal that focus on science, experiments, engineering, technologies and applications of nano- or microscale structure and system in physics, chemistry, biology, material science, pharmacy and their expanding interfaces with at least one dimension ranging from a few sub-nanometers to a few hundreds of micrometers. Especially, emphasize the bottom-up approach in the length scale from nano to micro since the key for nanotechnology to reach industrial applications is to assemble, to modify, and to control nanostructure in micro scale. The aim is to provide a publishing platform crossing the boundaries, from nano to micro, and from science to technologies.