Boosting CO2 Electroreduction over a Cadmium Single-Atom Catalyst by Tuning of the Axial Coordination Structure.
Yahui WuChunjun ChenXupeng YanXiaofu SunQinggong ZhuPengsong LiYiming LiShoujie LiuJingyuan MaYuying HuangHuizhen LiuPublished in: Angewandte Chemie (International ed. in English) (2021)
Guided by first-principles calculations, it was found that Cd single-atom catalysts (SACs) have excellent performance in activating CO2 , and the introduction of axial coordination structure to Cd SACs cannot only further decrease the free energy barrier of CO2 reduction, but also suppress the hydrogen evolution reaction (HER). Based on the above discovery, we designed and synthesized a novel Cd SAC that comprises an optimized CdN4 S1 moiety incorporated in a carbon matrix. It was shown that the catalyst exhibited outstanding performance in CO2 electroreduction to CO. The faradaic efficiency (FE) of CO could reach up to 99.7 % with a current density of 182.2 mA cm-2 in a H-type electrolysis cell, and the turnover frequency (TOF) value could achieve 73000 h-1 , which was much higher than that reported to date. This work shows a successful example of how to design highly efficient catalysts guided by theoretical calculations.
Keyphrases
- highly efficient
- molecular dynamics
- density functional theory
- metal organic framework
- molecular dynamics simulations
- mass spectrometry
- small molecule
- nk cells
- single cell
- electron transfer
- stem cells
- high throughput
- cell therapy
- bone marrow
- body composition
- bone mineral density
- carbon dioxide
- visible light
- reduced graphene oxide