Enhancing CO 2 Electroreduction to Multicarbon Products by Modulating the Surface Microenvironment of Electrode with Polyethylene Glycol
Chinese Academy of Sciences · Beijing National Laboratory for Molecular Sciences · +4 more institutions
Abstract
Abstract Modulating the surface microenvironment of electrodes stands as a pivotal aspect in enhancing the electrocatalytic performance for CO 2 electroreduction. Herein, we propose an innovative approach by incorporating a small amount of linear oligomer, polyethylene glycol (PEG), into Cu 2 O catalysts during the preparation of the Cu PEG electrode. The Faradaic efficiency (FE) toward multicarbon products (C 2+ ) increases from 69.3 % over Cu electrode without PEG to 90.3 % over Cu PEG electrode at 500 mA cm −2 in 1 M KOH in a flow cell. In situ investigations and theoretical calculations reveal that PEG molecules significantly modify the microenvironment on the Cu surface through hydrogen bond interactions.…
Citation impact
- FWCI
- 12.30
- Percentile
- 100%
- References
- 65
Authors
17- YWYiyong Wang
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, University of Chinese Academy of Sciences
- YCYingying Cheng
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences
- SLShiqiang Liu
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences
- YYYaoyu Yin
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, University of Chinese Academy of Sciences
- JYJiahao Yang
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, University of Chinese Academy of Sciences
Topics & keywords
- Electrode
- Polyethylene glycol
- PEG ratio
- Chemical engineering
- Catalysis
- Faraday efficiency
- Hydrogen bond
- Reversible hydrogen electrode