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Updated: Sep 17, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Enhanced Active Hydrogen Absorption and Stabilized Cu(I) Species Over Cu-O-Ce Bridges Boosting Electrocatalytic CO2
Zhenwei Zhao1, Yu Zhang1,2, Junjun Li1
1Department of Chemistry, School of Science, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin, 300072, China.
Abstract:
Rational design of water activation center to promote active hydrogen (*H) generation and stabilize Cu(I) species are significant for the formation of multicarbon (C2+) products over Cu-based catalysts in electrocatalytic CO2 reduction reaction (CO2RR). Herein, CeO2 nanograins and CuO nanothorns were selectively deposited on the edges of Cu2O cubes through the seed-mediated growth method. The as-synthesized CuxO-CeO2 composites exhibit enhanced Faradaic efficiency and partial current density of C2H4 compared with Cu2O cubes. In situ spectroscopies and theoretical calculations confirm that the Cu-O-Ce bridges in CuxO-CeO2 composite can effectively enhance *H absorption and stabilize Cu(I) species, facilitating subsequent C-C coupling and further protonation into the key *COCHO intermediate of C2H4. This work provides new insights into modulating *H absorption and stabilizing Cu(I) species for boosting CO2 to C2+ products.
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