Rapid preparation of carbon‐supported ruthenium nanoparticles by magnetic induction heating for efficient hydrogen evolution reaction in both acidic and alkaline media
Rapid preparation of carbon‐supported ruthenium nanoparticles by magnetic induction heating for efficient hydrogen evolution reaction in both acidic and alkaline media
复制标题
DOI：
10.1002/sus2.66
复制
发表时间：
2022-05
期刊：
影响因子：
--
通讯作者：
Qiming Liu;Bingzhang Lu;Forrest Nichols;Jeffrey Ko;Rene Mercado;F. Bridges;Shaowei Chen
中科院分区：
文献类型：
--
作者：
Qiming Liu;Bingzhang Lu;Forrest Nichols;Jeffrey Ko;Rene Mercado;F. Bridges;Shaowei Chen
钌被誉为铂在析氢反应（HER）中的竞争性替代物，析氢反应是电化学水裂解的关键过程。在这项研究中，我们成功地制备了金属钌纳米粒子负载在碳纸利用一种新的磁感应加热（MIH）的方法。这些样品在几秒钟内就能获得，具有通过常规热退火无法获得的富Cl表面。该系列中最好的样品在酸性和碱性介质中均显示出显著的HER活性，其过电位仅为-23 mV和-12 mV，达到10 mA/cm 2的电流密度，与Pt/C基准相当。基于密度泛函理论的理论研究表明，优异的电催化活性是由表面金属-Cl物种促进电荷转移和d-带中心下移引起的。这项研究的结果突出了MIH在快速样品制备中的独特优势，其中残余阴离子配体在操纵金属表面的电子性质和最终的电催化活性方面发挥着关键作用。
Ruthenium has been hailed as a competitive alternative for platinum toward hydrogen evolution reaction (HER), a critical process in electrochemical water splitting. In this study, we successfully prepare metallic Ru nanoparticles supported on carbon paper by utilizing a novel magnetic induction heating (MIH) method. The samples are obtained within seconds, featuring a Cl‐enriched surface that is unattainable via conventional thermal annealing. The best sample within the series shows a remarkable HER activity in both acidic and alkaline media with an overpotential of only ‐23 and ‐12 mV to reach the current density of 10 mA/cm2, highly comparable to that of the Pt/C benchmark. Theoretical studies based on density functional theory show that the excellent electrocatalytic activity is accounted by the surface metal‐Cl species that facilitate charge transfer and downshift the d‐band center. Results from this study highlight the unique advantages of MIH in rapid sample preparation, where residual anion ligands play a critical role in manipulating the electronic properties of the metal surfaces and the eventual electrocatalytic activity.