Enhancing H 2 O 2 Electrosynthesis at Industrial-Relevant Current in Acidic Media on Diatomic Cobalt Sites
State Key Laboratory of Chemical Engineering · Tsinghua University · +1 more institution
Abstract
Electrocatalytic synthesis of hydrogen peroxide (H2O2) in acidic media is an efficient and eco-friendly approach to produce inherently stable H2O2, but limited by the lack of selective and stable catalysts under industrial-relevant current densities. Herein, we report a diatomic cobalt catalyst for two-electron oxygen reduction to efficiently produce H2O2 at 50–400 mA cm–2 in acid. Electrode kinetics study shows a >95% selectivity for two-electron oxygen reduction on the diatomic cobalt sites. In a flow cell device, a record-high production rate of 11.72 mol gcat–1 h–1 and exceptional long-term stability (100 h) are realized under high current densities. In situ spectroscopic studies and theoretical…
Citation impact
- FWCI
- 14.31
- Percentile
- 100%
- References
- 49
Authors
17- HHHelai Huang
State Key Laboratory of Chemical Engineering, Tsinghua University
- MSMingze Sun
State Key Laboratory of Chemical Engineering, Tsinghua University
- SLShuwei Li
Tsinghua University
- SZShengbo Zhang
State Key Laboratory of Chemical Engineering, Tsinghua University
- YLYiyang Lee
State Key Laboratory of Chemical Engineering, Tsinghua University
Topics & keywords
- Chemistry
- Cobalt
- Catalysis
- Diatomic molecule
- Electrosynthesis
- Hydrogen peroxide
- Metal
- Selectivity