Oxygen Vacancy-Mediated Hetero-Asymmetrical Dual Active Sites Break the Activity-Stability Trade-Off for Efficient Acidic Water Oxidation
State Key Laboratory of Chemical Engineering · Beijing University of Chemical Technology · +7 more institutions
Abstract
Regulating the reaction pathway to overcome the activity-stability trade-off of catalysts is significant but remains highly challenging in acidic oxygen evolution reactions (OERs). Herein, we incorporated atomically dispersed Ru into an oxygen vacancy-rich (Ovc) MnO2–x host through a combination of hydrothermal reaction, argon-plasma bombardment, and isomorphic substitution, resulting in a distinctive catalyst (Ru-AP-MnO2–x) featuring Ovc-mediated heteroasymmetric dual-active-site Mn–Ovc–Ru units. Impressively, the Ru-AP-MnO2–x catalyst achieved a low overpotential of 233 mV at 100 mA cm–2 and demonstrated an exceptional stability for >5000 h at 10 mA cm–2 in 0.5 M H2SO4. When used in a proton exchange…
Citation impact
- FWCI
- 21.87
- Percentile
- 100%
- References
- 54
Authors
12- QGQiang Gao
State Key Laboratory of Chemical Engineering, Beijing University of Chemical Technology
- AZAnquan Zhu
City University of Hong Kong, Diamond Materials (United States)
- GLGuangzu Liu
State Key Laboratory of Chemical Engineering, Beijing University of Chemical Technology
- ZSZhiyi Sun
Beijing Institute of Technology, Institute of Catalysis and Petrochemistry, Division of Materials Science and Engineering
- TLTeng Li
State Key Laboratory of Chemical Engineering, Beijing University of Chemical Technology
Topics & keywords
- Catalysis
- Overpotential
- Oxygen
- Oxygen evolution
- Electrolysis of water
- Hydrothermal circulation
- Water splitting
- Reaction intermediate
- Clean water and sanitation