Dynamic rhenium dopant boosts ruthenium oxide for durable oxygen evolution
The University of Adelaide · University of Electronic Science and Technology of China · +5 more institutions
Abstract
Abstract Heteroatom-doping is a practical means to boost RuO 2 for acidic oxygen evolution reaction (OER). However, a major drawback is conventional dopants have static electron redistribution. Here, we report that Re dopants in Re 0.06 Ru 0.94 O 2 undergo a dynamic electron accepting-donating that adaptively boosts activity and stability, which is different from conventional dopants with static dopant electron redistribution. We show Re dopants during OER, (1) accept electrons at the on-site potential to activate Ru site, and (2) donate electrons back at large overpotential and prevent Ru dissolution. We confirm via in situ characterizations and first-principle computation that the dynamic…
Citation impact
- FWCI
- 22.45
- Percentile
- 100%
- References
- 61
Authors
14Topics & keywords
- Dopant
- Overpotential
- Ruthenium
- Materials science
- Oxygen evolution
- Redistribution (election)
- Heteroatom
- Chemical physics