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Improving the activity of electrochemical reduction of CO_(2) to C_(1) products by oxidation derived copper catalyst

引用

Materials Reports(Energy) 2023年第1期3卷 107-114,I0004页

作者： Lingxue Diao Yingda Liu Feifei Chen Hong Pan David Perez de Lara Hui Liu Yahui Cheng Feng Luo Department of Electronic Science and Engineering and Tianjin Key Laboratory of Process Control and Green Technology for Pharmaceutical Industry Nankai UniversityTianjin300350China Department of Basic Science Tianjin Agricultural UniversityTianjin300392China IMDEA Nanosci Faraday 9Ciudad Univ CantoblancoMadrid28049Spain Tianjin Key Lab for Rare Earth Materials and Applications Center for Rare Earth and Inorganic Functional MaterialsSchool of Materials Science and EngineeringNankai UniversityTianjin300350China

cu-based electrocatalysts have become the focus in the field of electrochemical CO_(2) reduction reaction(ECO_(2) RR)due to their ability to produce multicarbon ***,the research on generating single carbon products with higher economic feasibility via ECO_(2) RR based on cu-based electrocatalysts is rather rare,and the roles of the surface architecture and oxides of the electrocatalysts have not been explained *** this work,a two-step method including thermal oxidation and electroreduction is proposed to introduce cuþinto pure cu foil to form cu_(2)O/cu *** regulating the surface composition and morphology of the electrocatalyst in this way,the activity of ECO 2 RR to C_(1) products has been greatly *** Faradaic efficiency of carbon products of the cu_(2)O/cu electrode reaches 84%at?0.7 V *** with good selectivity for HCOOH and *** current density of cu_(2)O/cu electrode reaches-12.21 mA cm^(2) at-0.8 V ***,which is much higher than that of the cu foil electrode(?0.09 mA cm?2).In-situ Raman characterization shows that cuþin cu_(2)O/cu electrode could inhibit hydrogen generation and promote ECO_(2) RR by stabilizing the adsorption of CO_(2).

关键词： cu-based electrocatalyst Electroreduction of CO_(2) In-situ Raman spectra C_(1)product

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