articleJournal of the American Chemical SocietyFeb 17, 2023Closed access

p–d Orbital Hybridization Induced by p-Block Metal-Doped Cu Promotes the Formation of C 2+ Products in Ampere-Level CO 2 Electroreduction

PLPengsong LiJBJiahui BiJLJiyuan LiuYWYong WangXKXinchen Kang

Chinese Academy of Sciences · Beijing National Laboratory for Molecular Sciences · +2 more institutions

PubMed
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Abstract

Large-current electrolysis of CO2 to multi-carbon (C2+) products is critical to realize the industrial application of CO2 conversion. However, the poor binding strength of *CO intermediates on the catalyst surface induces multiple competing pathways, which hinder the C2+ production. Herein, we report that p–d orbital hybridization induced by Ga-doped Cu (CuGa) could promote efficient CO2 electrocatalysis to C2+ products at ampere-level current density. It was found that CuGa exhibited the highest C2+ productivity with a remarkable Faradaic efficiency (FE) of 81.5% at a current density of 0.9 A/cm2, and the potential at such a high current density was −1.07 V versus reversible hydrogen electrode. At 1.1 A/cm2,…

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294
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Authors

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Topics & keywords

Topics
Keywords
  • Chemistry
  • Electrochemistry
  • Catalysis
  • Faraday efficiency
  • Electrocatalyst
  • Electrolysis
  • Metal
  • Current density
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