School of Chemistry and Materials Science, Institute of Advanced Materials and Flexible Electronics (IAMFE), Nanjing University of Information Science and Technology, Nanjing, 210044, China.
College of Science, Nanjing Forestry University, Nanjing, 210037, China.
Chemistry. 2023 May 16;29(28):e202300205. doi: 10.1002/chem.202300205. Epub 2023 Mar 28.
To meet the requirements for industrial water splitting to generate hydrogen, it is urgent, but still quite challenging to develop highly active and stable electrocatalysts for large-current-density hydrogen evolution reaction (HER). Herein, Ru-incorporated NiSe (Ru-NiSe ) was designed and synthesized. The introduction of Ru results in the formation of hierarchically structured Ru-NiSe with large electrochemical active surface area, and well-modified electronic structure. As expected, the as-fabricated Ru-NiSe displays impressive HER activity in 1.0 M KOH, with a low overpotential of 180.8 mV to reach the current density of 1000 mA cm . Ru-NiSe also presents outstanding long-term stability at high current densities, owing to its high intrinsic chemical stability, and strong catalyst-support interface. Notably, when performed at a certain current density of 1000 mA cm , the overpotential increase after 90 h is only 13 mV. Such excellent HER performance of Ru-NiSe demonstrates its great potential for practical use in industrial water splitting.
为满足工业水分解制氢的要求，开发高活性和稳定的大电流密度析氢反应（HER）电催化剂迫在眉睫，但仍极具挑战性。在此，设计并合成了 Ru 掺杂的 NiSe（Ru-NiSe）。Ru 的引入导致形成具有大电化学活性表面积和良好修饰的电子结构的分级结构 Ru-NiSe。不出所料，所制备的 Ru-NiSe 在 1.0 M KOH 中表现出令人印象深刻的 HER 活性，达到 1000 mA cm-2 的电流密度仅需 180.8 mV 的过电势。由于其高本征化学稳定性和强催化剂-载体界面，Ru-NiSe 在高电流密度下也表现出出色的长期稳定性。值得注意的是，当在特定的 1000 mA cm-2电流密度下运行时，90 h 后过电势的增加仅为 13 mV。Ru-NiSe 如此优异的 HER 性能表明其在工业水分解中的实际应用具有巨大潜力。
