Enhanced Acidic Water Oxidation by Dynamic Migration of Oxygen Species at the Ir/Nb 2 O 5− x Catalyst/Support Interfaces
University of Science and Technology of China · Chinese Academy of Sciences · +5 more institutions
Abstract
Abstract Catalyst/support interaction plays a vital role in catalysis towards acidic oxygen evolution (OER), and the performance reinforcement is currently interpreted by either strain or electron donation effect. We herein report that these views are insufficient, where the dynamic evolution of the interface under potential bias must be considered. Taking Nb 2 O 5− x supported iridium (Ir/Nb 2 O 5− x ) as a model catalyst, we uncovered the dynamic migration of oxygen species between IrO x and Nb 2 O 5− x during OER. Direct spectroscopic evidence combined with theoretical computation suggests these migrations not only regulate the in situ Ir structure towards boosted activity, but also suppress its…
Citation impact
- FWCI
- 11.85
- Percentile
- 100%
- References
- 83
Authors
19- ZSZhaoping Shi
University of Science and Technology of China, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry
- JLJi Li
Chinese Academy of Sciences, Shanghai Institute of Applied Physics, University of Chinese Academy of Sciences
- JJJiadong Jiang
Jilin University
- YWYibo WangCorresponding
University of Science and Technology of China, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry
- YWYibo Wang
University of Science and Technology of China, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry
Topics & keywords
- Catalysis
- Oxygen evolution
- Oxygen
- Iridium
- Chemistry
- Redox
- Chemical engineering
- Materials science
- Clean water and sanitation