期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 61, 期 44, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202212640
关键词
Ag-Based; Electric Filed; Electrochemical CO2 Reduction; Heteroatoms; Intermediate
资金
- International Science and Technology Cooperation Program [2017YFE0127800, 2018YFE0203402]
- Natural Science Foundation of China [21872174, U1932148]
- China postdoctoral science foundation [2021 M703627]
- State Key Laboratory of Powder Metallurgy, Hunan Provincial Science and Technology Program [2017XK2026]
- Hunan Provincial Natural Science Foundation of China [2020JJ2041, 2020JJ5691]
- science and technology innovation Program of Hunan Province [2020WK2002]
- Ministry of Science and Technology, Taiwan [MOST 110-2113-M213-002]
- e-conversion cluster of excellence from the (DFG, German Research Foundation) under Germany's Excellence Strategy [EXC 2089/1390776260]
- Bavarian program Solar Technologies Go Hybrid (SolTech)
- Center for NanoScience (CeNS)
- European Commission through the ERC Starting Grant CATALIGHT [802989]
- Projekt DEAL
This study demonstrates that the electric field generated by Sn heteroatoms on the Ag/Sn catalyst enhances the adsorption of *COOH, favoring the production of CO during CO2RR process.
Carbon dioxide electroreduction (CO2RR) is a sustainable way of producing carbon-neutral fuels. Product selectivity in CO2RR is regulated by the adsorption energy of reaction-intermediates. Here, we employ differential phase contrast-scanning transmission electron microscopy (DPC-STEM) to demonstrate that Sn heteroatoms on a Ag catalyst generate very strong and atomically localized electric fields. In situ attenuated total reflection infrared spectroscopy (ATR-IR) results verified that the localized electric field enhances the adsorption of *COOH, thus favoring the production of CO during CO2RR. The Ag/Sn catalyst exhibits an approximately 100 % CO selectivity at a very wide range of potentials (from -0.5 to -1.1 V, versus reversible hydrogen electrode), and with a remarkably high energy efficiency (EE) of 76.1 %.
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