Cu2O-based catalysts applied for CO2 electrocatalytic reduction: A review

Abstract

The application of sustainable energy-driven electrocatalytic carbon dioxide reduction (CO2RR) technology enables the synthesis of valuable chemicals and feedstocks. This offers a promising pathway to effectively reduce greenhouse gas emissions associated with fossil fuels. Cu2O-based electrocatalysts have been widely investigated due to their cost-effective, environmentally friendly, and structurally tunable nature. This article provides a comprehensive review of recent advancements in the electrocatalytic reduction of carbon dioxide using Cu2O-based catalysts, with a focus on the properties, structure, and synthesis of Cu2O. It summarizes the performance of Cu2O-based catalysts in CO2 reduction and discusses several optimization strategies to enhance their stability and redox capabilities. Furthermore, it outlines the application of Cu2O-based catalysts in CO2 reduction. Finally, the opportunities, challenges and research directions for Cu2O-based catalysts in the field of CO2 electrocatalytic reduction are identified, providing guidance for their broad application in the energy and environmental sectors.