The reporter learned from the University of Science and Technology of China (hereinafter referred to as the Chinese University of Science and Technology) that the research team of Professor Yu Shuhong of the school cooperated with scientists from the University of Toronto to propose for the first time in the process of carbon dioxide electroreduction, by regulating the "post reaction" step of carbon-carbon coupling to suppress olefin The production and realization of efficient conversion of multi-carbon alcohol makes carbon dioxide “transformation†of multi-carbon alcohol fuel a reality, and provides new design ideas for the selective preparation of high-energy density liquid alcohol fuel. This result was published in the latest issue of the famous academic journal "Nature · Catalysis". Electrocatalytic reduction of carbon dioxide to prepare carbon-based chemical raw materials is an effective means to solve the problem of long-term storage of renewable electrical energy. Ethanol and propanol are widely used as renewable transportation fuels due to their high energy density. However, the electrochemical reduction of carbon dioxide to produce polyalcohols is full of challenges. In the study of electrocatalytic reduction of carbon dioxide, scientists from the University of Science and Technology of China found that a special nanostructure is conducive to the selection of the reaction path in the process of carbon dioxide reduction, which promotes the electrochemical synthesis of polycarbon alcohols by inhibiting the production of ethylene. The research team synthesized a cuprous sulfide nanocrystal with controllable defects through colloidal nucleation method, and then successfully developed a new type of copper nanocatalyst by using in-situ electrochemical reduction method. On this basis, the researchers used the flow cell equipment to solve the carbon dioxide mass transfer limitation, which promoted the conversion efficiency of this catalyst's polyalcohol Faraday to 32%, and the conversion rate per square centimeter exceeded 120 mA, which is currently reported internationally. The highest current density. (Reporter Wu Changfeng)
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