Tuning α‐MnOOH Formation via Atomic‐Level Fe Introduction for Superior OER Performance
Qingdao University of Science and Technology · Beijing University of Chemical Technology · +1 more institution
Abstract
Abstract The arrangement of atoms in the catalyst directly impacts the catalytic performance. Herein, a heteroatom doping strategy is found as an effective approach for the regulation of MnO 2 crystal reconstruction during the oxygen evolution reaction (OER), thereby ensuring and optimizing the performance of the catalyst. Real‐time tracking of dynamic surface reconstruction reveals that δ‐MnO 2 transforms into the less active γ‐MnOOH phase, while single‐atom Fe doping facilitates the formation of highly active α‐MnOOH phase. The formation of asymmetric Fe─O─Mn bonds induce lattice distortions of MnO 2 and promote electron transfer from Fe to Mn with an increase in the Mn 3 ⁺ content, which is conducive to…
Citation impact
- FWCI
- 19.58
- Percentile
- 100%
- References
- 57
Authors
9Topics & keywords
- Materials science
- Nanotechnology