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Updated: Jun 5, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Tandem Electroreduction of CO2 to C2+ Products Based on M-SACs/Cu Catalysts
Qizhe He1, Ting-Ting Li1,2
1School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, China.
Abstract:
Electrochemical CO2 reduction reaction (ECO2RR) is considered a highly promising method to produce high-value chemicals and fuels, contributing significantly the artificial carbon balance. Plenty catalysts can facilitate the conversion of CO2 into mono-carbon (C1) products. Among these catalysts, Cu species exhibit a distinct role in the formation of multi-carbon (C2+) products characterized by enhanced energy density. However, the limited selectivity of C2+ products, along with the inferior stability, and high overpotential demonstrated by single-component Cu catalysts, hinders their applicability in industrial-scale production. The implementation of a tandem strategy, which involves coupling the CO2-to-CO pathway using Ag, Au, metal single-atom catalysts (M-SACs), etc., with the CO-to-C2+ conversion on Cu, represents a novel approach for the efficient generation of C2+ products. Given the high cost and restricted availability of noble metals, M-SACs have attracted substantial interest in tandem systems due to their cost-effectiveness and efficient atom utilization. The systematic analysis of the design principles and structure-activity relationship is essential for the advancement of M-SACs/Cu-based tandem catalysts. Here we first introduce various prevalent design strategies of M-SACs/Cu-based tandem catalysts for ECO2RR and then systematically summarize the latest advancements of M-SACs/Cu-based tandem system, encompassing metal-organic frameworks/Cu (MOFs/Cu), covalent organic frameworks/Cu (COFs/Cu), and nitrogen-doped carbon support transition metal single atomic materials/Cu (M-N-C/Cu). Lastly, we discuss the challenges and opportunities with the design and construction of M-SACs/Cu-based tandem catalysis for ECO2RR.
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