Iridium-free high-entropy ruthenium-based oxides with activated lattice oxygen towards high efficient and durable acidic water oxidation
Ruthenium-based oxides are promising high-activity acidic OER catalysts to replace IrO<sub>2</sub> but suffer from poor stability. Here, we report an Ir-free high-entropy (RuCrMnFeNi)O<sub>2</sub> electrocatalyst with exceptional activity (212 mV@10 mA cm<sup>-2</sup>) and stability (100 h) in 0.5 M H<sub>2</sub>SO<sub>4</sub>. In PEM electrolyzers, it operates stably for 300 h at 200 mA cm<sup>-2</sup>. <sup>18</sup>O labeling confirms a lattice-oxygen-mediated mechanism.
Authors
- Suoqing Yu
- Aobing Wang (ORCID: https://orcid.org/0009-0001-5458-8423)
- Hui Liu (ORCID: https://orcid.org/0000-0002-9180-0198)
- Xin Zhang (ORCID: https://orcid.org/0000-0002-3509-6335)
- Maolin Li (ORCID: https://orcid.org/0009-0000-9632-8390)
- Chong Ma (ORCID: https://orcid.org/0009-0009-0827-0666)
- Limin Liang (ORCID: https://orcid.org/0009-0006-3485-1649)
- Lei Li (ORCID: https://orcid.org/0000-0002-6055-9119)
Institutions
- Hebei University of Technology (CN)
Publication Details
- Journal
- Chemical Communications
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5cc02962g
- Citations
- 1
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 0.36
Funders
- Special Project of Central Government for Local Science and Technology Development of Hubei Province