Structure-performance relationship of Cu-based nanocatalyst for electrochemical CO2 reduction

Using electrocatalytic methods to reduce CO2 to high value-added chemicals under normal temperature and pressure is one of the ideal choices for solving the current energy shortage and environmental pollution problems. To date, copper based materials have been confirmed to be the most effective catalysts for reducing CO2 to hydrocarbon products such as methane, ethene, and ethanol. Therefore, extensive attentions have been paid to explore Cu-based electrocatalyst for CO2 reduction. In this paper, we reviewed the development of Cu-based catalysts for electrochemical CO2 reduction, and mainly focused on the dependence of catalytic performance on catalyst morphology including grain boundaries, surface structures and open facets and testing conditions such as substrate transport and local pH. Finally, we offer some challenges and perspectives on the future outlook for electrochemical CO2 reduction. © 2021, Editorial Board of CIESC Journal. All right reserved.