Milazzo Rachela Gabriella, Marino Nino, Tranchida Giuseppe, Bongiorno Corrado, Pulvirenti Luca, Fusto Letizia, Condorelli Guglielmo Guido, Lombardo Salvatore Antonino, Privitera Stefania Maria Serena
CNR-IMM VIII Strada 5, Catania 95121, Italy.
Department of Chemical Sciences, University of Catania, Viale Andrea Doria, 6, Catania 95125, Italy.
ACS Appl Energy Mater. 2025 Apr 29;8(9):5698-5707. doi: 10.1021/acsaem.4c03349. eCollection 2025 May 12.
The widespread development of technologies for green hydrogen production strictly relies on the availability of durable electrocatalysts that can operate in either acidic or alkaline electrolytes while using a limited amount of platinum group metals. In this work, we present an effective strategy based on electrodeposition as a low-cost method to obtain low-loading Ru catalysts on carbon electrodes for the hydrogen evolution reaction in an acidic environment. The deposition conditions have been investigated and optimized in order to have uniform coverage, a large number of active sites, and good electrocatalytic performance. The morphology and chemical structure have been investigated using scanning electron microscopy and X-ray photoelectron spectroscopy measurements. Excellent catalytic activity has been achieved with a Ru loading of 0.06 mg cm, obtaining an overpotential of 67 mV at 10 mA cm and a Tafel slope of 50 mV dec.
绿色制氢技术的广泛发展严格依赖于耐用的电催化剂，这些催化剂能够在酸性或碱性电解质中运行，同时使用少量的铂族金属。在这项工作中，我们提出了一种基于电沉积的有效策略，作为一种低成本方法，用于在酸性环境中获得用于析氢反应的碳电极上的低负载钌催化剂。为了实现均匀覆盖、大量活性位点和良好的电催化性能，我们对沉积条件进行了研究和优化。使用扫描电子显微镜和X射线光电子能谱测量对其形态和化学结构进行了研究。在钌负载量为0.06 mg/cm²时实现了优异的催化活性，在10 mA/cm²时过电位为67 mV，塔菲尔斜率为50 mV/dec。
