Recent advances in Cu-based catalysts for electroreduction of carbon dioxide

Electrochemical CO2 reduction reaction (CO2RR) is an important approach implemented in converting CO2 to valuable products, achieving energy and environmental sustainability. Recently, Cu-based electrocatalysts for CO2 conversion have attracted immense attention due to their fantastic ability to catalyze CO2 to various products with high activity and selectivity. This review summarizes the recent advances in the rational design of Cu-based electrocatalysts used for CO2RR, including tunable structure and size, exploitation of advanced supports, and composition engineering of Cu-based oxides and alloys. Meanwhile, the stability, activity, catalytic performance, and mechanism are also highlighted. Finally, the application prospects and challenges for Cu-based electrocatalysts are summarized to satisfy the need for advanced electrocatalysts for CO2RR.