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A scalable method for preparing Cu electrocatalysts that convert CO<sub>2</sub> into C<sub>2</sub><sup>+</sup> products

Chemistry

A scalable method for preparing Cu electrocatalysts that convert CO<sub>2</sub> into C<sub>2</sub><sup>+</sup> products

T. Kim and G. T. R. Palmore

Discover a groundbreaking method for efficiently converting CO₂ into valuable C₂⁺ products using innovative copper electrocatalysts. This exciting research, conducted by Taehee Kim and G. Tayhas R. Palmore, reveals a unique anodic halogenation technique that enhances catalyst efficiency, achieving faradaic efficiencies of up to 72%.

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Abstract
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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