Abstract
Electrocatalytic CO2 to multi-carbon products is an attractive strategy to achieve a carbon-neutral energy cycle. Single-atom catalysts (SACs) that achieve the C2 selectivity always have low metal loading and inevitably undergo in situ reversible/irreversible metallic agglomerations under working conditions. Herein, a high-density Cu SA anchored F, O, N co-doped carbon composites (CuFONC) with a stable CuN2O1 configuration is provided, which can reach a remarkable C2 selectivity of ≈80.5% in Faradaic efficiency at −1.3 V versus RHE. In situ/ex situ experimental characterization and density functional theory (DFT) calculations verified that the excellent stability of CuN2O1 during the CO2RR process can be attributed to F/O co-derived regulation for CuFONC. Remarkably, as confirmed by DFT, it is atomic Cu sites and the adjacent bonded N motifs in CuFONC that act as the adsorption sites for CO* during the C─C coupling process. This work brings a prospective on designing novel but stable atomic Cu coordination for electrolytic CO2-to-C2 pathway.
Original language | English |
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Article number | 2400057 |
Journal | Advanced Energy Materials |
Volume | 14 |
Issue number | 21 |
DOIs | |
Publication status | Published - 5 Jun 2024 |
Keywords
- CO Reduction
- Cu single-atom catalysts
- local coordination environment
- site stability