This paper presents a scalable method for preparing copper (Cu) electrocatalysts that efficiently convert CO₂ into C₂⁺ products. Anodic halogenation of electropolished Cu foils in halide solutions (KCl, KBr, KI) creates CuCl, CuBr, or CuI surfaces, respectively. Subsequent oxide formation and reduction lead to catalysts with a high density of defect sites and relatively low roughness, crucial for CO₂ conversion to C₂⁺ products. The method achieves faradaic efficiencies up to 72%.
Publisher
Nature Communications
Published On
Jul 17, 2020
Authors
Taehee Kim, G. Tayhas R. Palmore
Tags
copper electrocatalysts
CO₂ conversion
C₂⁺ products
anodic halogenation
faradaic efficiency
defect sites
oxidation-reduction
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