Bowen Guo, Wenqiang Li, Haipeng Chen, Heng Zhang, Huabo Li, Xun Feng, Bo Li, Liya Wang, Zhanke Wang, Zongkui Kou
{"title":"Single-atom Ru Anchored on Co3S4 Nanowires Enabling Ampere‐Level Water Splitting for Multi-Scenarios Green Energy-to-Hydrogen Systems","authors":"Bowen Guo, Wenqiang Li, Haipeng Chen, Heng Zhang, Huabo Li, Xun Feng, Bo Li, Liya Wang, Zhanke Wang, Zongkui Kou","doi":"10.1016/j.nanoen.2025.110881","DOIUrl":null,"url":null,"abstract":"Versatile systems capable of high current densities (exceeding 1<!-- --> <!-- -->A<!-- --> <!-- -->cm<sup>−2</sup>) are essential for advancing hydrogen energy from theoretical to practical applications. Herein, single-atom Ru anchored on cobalt tetrasulfide (Ru-Co<sub>3</sub>S<sub>4</sub>) nanowires were proposed as an exceptional performance electrocatalyst for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Microstructural analyses, X-ray absorption spectroscopy, and theoretical calculations demonstrate that the Ru atoms doped in Co<sub>3</sub>S<sub>4</sub> nanowire with the formation of three-coordinated Ru-S species, which can effectively prevent excessive oxidation of Ru and improve stability. Benefiting from high intrinsic activity, fast charge transfer rate and large amounts of active sites, the Ru-Co<sub>3</sub>S<sub>4</sub> catalyst demonstrates a low overpotential of 306<!-- --> <!-- -->mV for HER and 460<!-- --> <!-- -->mV<!-- --> <!-- -->cm<sup>-2</sup> for OER at 1<!-- --> <!-- -->A<!-- --> <!-- -->cm<sup>-2</sup> in 1<!-- --> <!-- -->M KOH aqueous medium. Additionally, Ru-Co<sub>3</sub>S<sub>4</sub> catalysts represent 9.5 times in mass activity (4.27<!-- --> <!-- -->A<!-- --> <!-- -->mg<sup>-1</sup><sub>Ru</sub>) compared to Pt/C (0.45<!-- --> <!-- -->A<!-- --> <!-- -->mg<sup>-1</sup><sub>Pt</sub>). Ru-Co<sub>3</sub>S<sub>4</sub> has proven effective for hydrogen generation through electrolysis in both alkaline freshwater and seawater settings. Moreover, the integrated utilization of wind and solar energy in water splitting for hydrogen production systems offers the potential of single atoms Ru doped catalyst for large-scale hydrogen production in the future.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"49 1","pages":""},"PeriodicalIF":16.8000,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Energy","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.nanoen.2025.110881","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Versatile systems capable of high current densities (exceeding 1 A cm−2) are essential for advancing hydrogen energy from theoretical to practical applications. Herein, single-atom Ru anchored on cobalt tetrasulfide (Ru-Co3S4) nanowires were proposed as an exceptional performance electrocatalyst for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Microstructural analyses, X-ray absorption spectroscopy, and theoretical calculations demonstrate that the Ru atoms doped in Co3S4 nanowire with the formation of three-coordinated Ru-S species, which can effectively prevent excessive oxidation of Ru and improve stability. Benefiting from high intrinsic activity, fast charge transfer rate and large amounts of active sites, the Ru-Co3S4 catalyst demonstrates a low overpotential of 306 mV for HER and 460 mV cm-2 for OER at 1 A cm-2 in 1 M KOH aqueous medium. Additionally, Ru-Co3S4 catalysts represent 9.5 times in mass activity (4.27 A mg-1Ru) compared to Pt/C (0.45 A mg-1Pt). Ru-Co3S4 has proven effective for hydrogen generation through electrolysis in both alkaline freshwater and seawater settings. Moreover, the integrated utilization of wind and solar energy in water splitting for hydrogen production systems offers the potential of single atoms Ru doped catalyst for large-scale hydrogen production in the future.
期刊介绍:
Nano Energy is a multidisciplinary, rapid-publication forum of original peer-reviewed contributions on the science and engineering of nanomaterials and nanodevices used in all forms of energy harvesting, conversion, storage, utilization and policy. Through its mixture of articles, reviews, communications, research news, and information on key developments, Nano Energy provides a comprehensive coverage of this exciting and dynamic field which joins nanoscience and nanotechnology with energy science. The journal is relevant to all those who are interested in nanomaterials solutions to the energy problem.
Nano Energy publishes original experimental and theoretical research on all aspects of energy-related research which utilizes nanomaterials and nanotechnology. Manuscripts of four types are considered: review articles which inform readers of the latest research and advances in energy science; rapid communications which feature exciting research breakthroughs in the field; full-length articles which report comprehensive research developments; and news and opinions which comment on topical issues or express views on the developments in related fields.