Structural reconfiguration of an Ru-bearing high-entropy sulfide into an efficient alkaline oxygen evolution catalyst
High-entropy sulfides (HESs) with multiple metals are one of the most promising electrocatalysts, but the ambiguous self-reconstruction mechanism greatly hinders their further practical applications in water electrolysis. Here, an Ru-bearing high-entropy sulfide (FeCoNiCuRu)S<sub>2</sub> was prepared by employing a facile high-pressure and high-temperature (HPHT) method. The obtained high-entropy sulfide (FeCoNiCuRu)S<sub>2</sub> exhibited excellent OER performance and robust stability in a 1 M KOH solution. By employing <i>operando</i> X-ray absorption spectroscopy (XAS) and Raman spectroscopy, along with <i>ex situ</i> TEM and XPS characterization, we determine the specific self-reconstruction path (MS<sub>2</sub> was directly converted into MOOH) and real active species. This research offers great opportunities for the development of highly efficient catalysts.
Authors
- Lu Shang (ORCID: https://orcid.org/0000-0001-5701-5017)
- Shijing Zhao (ORCID: https://orcid.org/0000-0002-3955-4372)
- Zhengxing Lv
- Huiyang Gou (ORCID: https://orcid.org/0000-0002-2612-4314)
- Tierui Zhang (ORCID: https://orcid.org/0000-0002-7948-9413)
- Jiong Li (ORCID: https://orcid.org/0000-0001-6826-9987)
- Wenbo Cheng (ORCID: https://orcid.org/0000-0003-0774-1197)
- Wenfeng Peng (ORCID: https://orcid.org/0000-0002-6612-1214)
- Junshuang Zhou
- Bingmin Yan (ORCID: https://orcid.org/0000-0001-6789-5468)
Institutions
- Chinese Academy of Sciences (CN)
- Yanshan University (CN)
- Huanghuai University (CN)
- Technical Institute of Physics and Chemistry (CN)
- Center for High Pressure Science and Technology Advanced Research (CN)
- Shanghai Synchrotron Radiation Facility
Publication Details
- Journal
- Chemical Communications
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5cc00974j
- Citations
- 3
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 1.09