Tracking the Role of Defect Types in Co 3 O 4 Structural Evolution and Active Motifs during Oxygen Evolution Reaction
Tianjin University · National University of Singapore · +5 more institutions
Abstract
Dynamic reconstruction of catalyst active sites is particularly important for metal oxide-catalyzed oxygen evolution reaction (OER). However, the mechanism of how vacancy-induced reconstruction aids OER remains ambiguous. Here, we use Co3O4 with Co or O vacancies to uncover the effects of different defects in the reconstruction process and the active motifs relevant to alkaline OER. Combining in situ characterization and theoretical calculations, we found that cobalt oxides are converted to an amorphous [Co(OH)6] intermediate state, and then the mismatched rates of *OH adsorption and deprotonation lead to irreversible catalyst reconstruction. The stronger *OH adsorption but weaker deprotonation induced by O…
Citation impact
- FWCI
- 43.87
- Percentile
- 100%
- References
- 47
Authors
11- RZRongrong Zhang
Tianjin University, National University of Singapore, Université Bourgogne Franche-Comté
- LPLun PanCorresponding
Tianjin University, Unité Matériaux et Transformations, Collaborative Innovation Center of Chemical Science and Engineering Tianjin
- BGBeibei Guo
Tianjin University
- ZHZhen‐Feng Huang
Tianjin University, Unité Matériaux et Transformations, Collaborative Innovation Center of Chemical Science and Engineering Tianjin
- ZCZhongxin Chen
National University of Singapore, Université Bourgogne Franche-Comté
Topics & keywords
- Chemistry
- Oxygen evolution
- Tracking (education)
- Oxygen
- Active oxygen
- Crystallography
- Chemical physics
- Physical chemistry
- Affordable and clean energy