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Updated: Jul 9, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Editable Hydrogen Bond Network Within the Electric Double Layer for CO2 Reduction
Jiahao Yang1,2, Shiju Yu3, Jiapeng Jiao4
1Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Centre for Excellence in Molecular Sciences, Centre for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China.
Altering the water hydrogen bond network (HBN) rigidity at electrified interfaces impacts CO2 electroreduction. Moderate HBN rigidity optimizes C2+ production, achieving 90.9% Faradaic efficiency with a copper electrode.
Area of Science:
- Electrochemistry
- Surface Science
- Catalysis
Background:
- The hydrogen bond network (HBN) of water is dynamic and sensitive to electrified interfaces.
- Altering HBN rigidity is crucial for electrocatalytic performance and industrial scaling.
Purpose of the Study:
- To investigate how tuning HBN rigidity within the electrical double layer (EDL) affects CO2 electroreduction.
- To correlate HBN rigidity with the selectivity of CO2 electroreduction products.
Main Methods:
- Electrolysis of CO2 using different quaternary ammonium cations in a KHCO3 buffer.
- In situ spectroscopic and electrochemical measurements.
- Tuning HBN rigidity by electrolyte modification.
Main Results:
- HBN rigidity significantly influences CO2 electroreduction performance and product distribution.
- High rigidity favors CO production; low rigidity favors formate and H2.
- Moderate rigidity maximizes C2+ production, achieving 90.9% Faradaic efficiency at 0.81 A cm-2 on Cu electrodes.
Conclusions:
- HBN rigidity governs reaction intermediate configuration and water dissociation kinetics.
- Tuning HBN rigidity is a viable strategy to control electrocatalytic selectivity.
- This work provides insights into optimizing electrocatalysis for valuable chemical production.
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