Direct Dioxygen Radical Coupling Driven by Octahedral Ruthenium–Oxygen–Cobalt Collaborative Coordination for Acidic Oxygen Evolution Reaction
Xiamen University · Tan Kah Kee Innovation Laboratory · +3 more institutions
Abstract
The acidic oxygen evolution reaction (OER) has long been the bottleneck of proton exchange membrane water electrolyzers given its harsh oxidative and corrosive environments. Herein, we suggest an effective strategy to greatly enhance both the acidic OER activity and stability of Co3O4 spinel by atomic Ru selective substitution on the octahedral Co sites. The resulting highly symmetrical octahedral Ru–O–Co collaborative coordination with strong electron coupling effect enables the direct dioxygen radical coupling OER pathway. Indeed, both experiments and theoretical calculations reveal a thermodynamically breakthrough heterogeneous diatomic oxygen mechanism. Additionally, the active Ru–O–Co units are…
Citation impact
- FWCI
- 21.32
- Percentile
- 100%
- References
- 65
Authors
10Topics & keywords
- Chemistry
- Oxygen evolution
- Ruthenium
- Electron transfer
- Catalysis
- Overpotential
- Inorganic chemistry
- Cobalt
- Clean water and sanitation