Single-Atom Ru-Triggered Lattice Oxygen Redox Mechanism for Enhanced Acidic Water Oxidation
Zhejiang University · Massachusetts Institute of Technology · +1 more institution
Abstract
Activating the oxygen anionic redox presents a promising avenue for developing highly active oxygen evolution reaction (OER) electrocatalysts for proton-exchange membrane water electrolyzers (PEMWE). Here, we engineered a lattice-confined Ru single atom dispersed on a lamellar manganese oxide (MnO2) cation site. The strong Ru–O bond induced an upward shift in the O 2p band, enhancing metal–oxygen covalency and reshaping the OER mechanism toward lattice oxygen oxidation pathway with increased activity. In situ spectral characterization combined with density functional theory (DFT) calculations revealed that electron transfer from Mn to Ru alleviates the Jahn–Teller effect within the MnO6 octahedral structure,…
Citation impact
- FWCI
- 21.67
- Percentile
- 100%
- References
- 59
Authors
9Topics & keywords
- Chemistry
- Redox
- Oxygen
- Mechanism (biology)
- Inorganic chemistry
- Oxygen atom
- Photochemistry
- Atom (system on chip)
- Clean water and sanitation