Qingdao Energy Research Institute has developed a highly efficient electrocatalytic carbon dioxide reduction catalyst

Using renewable electricity to drive CO2 electrocatalytic reduction to methanol, formic acid and other high value-added chemical fuels, while solving the excessive CO2 emissions, it can also achieve the direct conversion of intermittent electrical energy to chemical energy, which can control carbon balance and optimize the energy consumption structure And so on. Due to the stable C = O double bond in the CO2 molecule, the energy required for electrocatalytic CO2 reduction (CO2RR) is higher. Therefore, developing high-efficiency catalysts to improve the catalytic efficiency of the reaction is the focus and difficulty of CO2RR research. In the past ten years, various catalysts have been developed for CO2RR research, and have made some progress on key scientific issues such as improving product selectivity and reducing overpotential, but the reaction current density and catalytic yield of CO2RR are still low , Unable to further meet the needs of industrial applications.

In response to the above scientific problems, the Environmentally Friendly Catalytic Process Research Group of the Qingdao Institute of Bioenergy and Processes, Chinese Academy of Sciences has carried out a large amount of research work in the development of highly efficient electrocatalysts (Angew. 2019, 15, 1903668; J. Mater. Chem. A, 2018, 6, 11236; ChemSusChem, 2018, 11, 2944; J. Mater. Chem. A, 2017, 5, 24651; Nanoscale, 2019, 11, 18715, etc. ). Recently, based on the previous research work, the research group found that the carbon layer directly coated with the amino functional group can effectively adjust the electronic structure of the non-noble metal catalyst SnS, thereby accelerating the electron conduction efficiency at the electrode interface and enhancing the adsorption state The adsorption capacity of the CO2 molecule and the reaction intermediate OCHO * has achieved a significant increase in reaction current density and catalytic yield. This research work provides a new strategy for improving the catalytic activity of transition metal catalysts. Related research results have been published in the journal Advanced Energy Materials (Adv. Energy Mater., 2020, 10, 1903664). Researcher Liu Li became the only corresponding author of the paper, and Chen Zhipeng was the first author of the paper.

The research was supported by the National Natural Science Foundation of China and the Collaborative Fund of the Clean Energy Innovation Institute of the Chinese Academy of Sciences.

(A) Differential charge distribution graph of SnS / Aminated-C composite catalyst; (b) Comparison graph of CO2RR active current density

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