Recent advances in copper-based catalysts for electrocatalytic reduction of CO2 to ethanol
The CO2 electrocatalytic reduction(CO2ER)technology has a high potential for energy conversion and greenhouse gas reduction.Achieving high current density and desired products with high selectivity,particularly multi-carbon compounds,has become a challenging and hot topic in this field.This article reviews the latest research progress on copper-based catalysts for the electrocatalytic reduction of CO2 to ethanol,including the excellent performance,catalyst modification strategies,novel electrolysis processes,stability control,and reaction mechanisms.Special emphasis is placed on the design,synthesis,and application of the copper-based catalysts that can achieve industrially relevant current densities and high selectivity for ethanol.The article also discusses the key factors affecting the catalyst performance,such as the catalyst's oxidation state,performance decline,and electrode stability.Finally,it gives prospects for the future research directions of copper-based catalysts for CO2ER to ethanol,including improving catalytic efficiency,stability and process scale-ups.This article is expected to provide references and suggestions for the development of efficient catalytic systems for CO2ER to ethanol and their industrialization.
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