Enhanced <scp> CO ₂ </scp> reduction to multi‐carbon products on <scp>CuLa</scp> bimetallic catalyst

Abstract Electrochemical CO 2 reduction (CO 2 R) powered with renewable electricity has been considered as a promising approach for carbon emission mitigation and sustainable production of value‐added chemicals. Developing active and selective electrocatalysts capable of achieving high multi‐carbon product selectivity at low overpotentials remains a critical challenge. In this work, we develop a lanthanum (La) doping strategy to optimize Cu‐based catalysts for enhanced CO 2 R performance. As a result, the optimized La‐modified CuO catalyst achieves a remarkable Faradaic efficiency of over 75% toward multi‐carbon products at a modest potential of approximately −0.5 V versus reversible hydrogen electrode, achieving a practical relevant current density of over 200 mA cm −2 . This high selectivity represents a twofold enhancement over state‐of‐the‐art CuO‐based catalysts under identical conditions. Detailed kinetic assessments and mechanistic investigations reveal that La incorporation enhance *CO binding strength on Cu and facilitate COCO dimerization, thereby facilitating the production of multi‐carbon products. Overall, this work establishes an effective approach for boosting multi‐carbon production through strategic rare‐earth element modification, thereby advancing the development of efficient CO 2 R systems for sustainable chemical synthesis. image