Valence Oscillation of Ru Active Sites for Efficient and Robust Acidic Water Oxidation
Nanjing University of Aeronautics and Astronautics · National Yang Ming Chiao Tung University · +3 more institutions
Abstract
Abstract The continuous oxidation and leachability of active sites in Ru‐based catalysts hinder practical application in proton‐exchange membrane water electrolyzers (PEMWE). Herein, robust inter‐doped tungsten–ruthenium oxide heterostructures [(Ru–W)O x ] fabricated by sequential rapid oxidation and metal thermomigration processes are proposed to enhance the activity and stability of acidic oxygen evolution reaction (OER). The introduction of high‐valent W species induces the valence oscillation of the Ru sites during OER, facilitating the cyclic transition of the active metal oxidation states and maintaining the continuous operation of the active sites. The preferential oxidation of W species and electronic…
Citation impact
- FWCI
- 15.90
- Percentile
- 100%
- References
- 58
Authors
12Topics & keywords
- Oxygen evolution
- Materials science
- Ruthenium
- Heterojunction
- Overpotential
- Ruthenium oxide
- Valence (chemistry)
- Catalysis
- Clean water and sanitation