articleNature CommunicationsJun 6, 2024GOLD OA

CO2 electrolysis to multi-carbon products in strong acid at ampere-current levels on La-Cu spheres with channels

Chinese Academy of Sciences · China University of Petroleum, Beijing · +4 more institutions

PubMed
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Abstract

Abstract Achieving satisfactory multi-carbon (C 2+ ) products selectivity and current density under acidic condition is a key issue for practical application of electrochemical CO 2 reduction reaction (CO 2 RR), but is challenging. Herein, we demonstrate that combining microenvironment modulation by porous channel structure and intrinsic catalytic activity enhancement via doping effect could promote efficient CO 2 RR toward C 2+ products in acidic electrolyte (pH ≤ 1). The La-doped Cu hollow sphere with channels exhibits a C 2+ products Faradaic efficiency (FE) of 86.2% with a partial current density of −775.8 mA cm −2 . CO 2 single-pass conversion efficiency for C 2+ products can reach 52.8% at −900 mA cm −2…

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