Selective production of ethylene from CO2 over CuAg tandem electrocatalysts

Ye Eun Jeon; You Na Ko; Jongseok Kim; Hyuk Choi; Wonhee Lee; Young Eun Kim; Doohwan Lee; Hyun You Kim; Ki Tae Park

doi:10.1016/j.jiec.2022.09.009

Selective production of ethylene from CO₂ over CuAg tandem electrocatalysts

Ye Eun Jeon, You Na Ko, Jongseok Kim, Hyuk Choi, Wonhee Lee, Young Eun Kim, Doohwan Lee, Hyun You Kim, Ki Tae Park

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

The electrochemical reduction reaction of CO₂ (CO2RR) is desirable for decreasing CO₂ concentration in the atmosphere and producing value-added chemicals. The development of advanced catalysts is a key challenge for the practical application of CO2RR. Recently, the bimetallic catalysts with two or more reaction sites acting synergistically are one of the most interesting catalysts. Herein, CuAg bimetallic catalysts with various Cu/Ag ratios are synthesized by the ultrasonic spray pyrolysis (USP) method for the selective production of ethylene (C₂H₄) via CO2RR. The electrocatalytic performances of the CuAg catalysts with different compositions are evaluated in a full flow single cell and the Cu90Ag10 exhibits 1.5 times the higher C₂H₄ Faradaic efficiency and the C₂H₄ current density at a cell voltage of 2.2 V than the bare Cu. Ag in the bimetallic catalysts provides additional CO via desorption-re-adsorption and diffusion process for C[sbnd]C coupling on the Cu surface to synthesize C₂H₄. In addition, the improved performance of the Cu90Ag10 is attributed to not only the synergistic effect between Cu and Ag but also the appropriate Cu/Ag ratio.

Original language	English
Pages (from-to)	191-198
Number of pages	8
Journal	Journal of Industrial and Engineering Chemistry
Volume	116
DOIs	https://doi.org/10.1016/j.jiec.2022.09.009
State	Published - 25 Dec 2022

Keywords

Ag
Bimetallic catalyst
CO electroreduction
Carbon dioxide
Cu
Ethylene

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10.1016/j.jiec.2022.09.009

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title = "Selective production of ethylene from CO2 over CuAg tandem electrocatalysts",

abstract = "The electrochemical reduction reaction of CO2 (CO2RR) is desirable for decreasing CO2 concentration in the atmosphere and producing value-added chemicals. The development of advanced catalysts is a key challenge for the practical application of CO2RR. Recently, the bimetallic catalysts with two or more reaction sites acting synergistically are one of the most interesting catalysts. Herein, CuAg bimetallic catalysts with various Cu/Ag ratios are synthesized by the ultrasonic spray pyrolysis (USP) method for the selective production of ethylene (C2H4) via CO2RR. The electrocatalytic performances of the CuAg catalysts with different compositions are evaluated in a full flow single cell and the Cu90Ag10 exhibits 1.5 times the higher C2H4 Faradaic efficiency and the C2H4 current density at a cell voltage of 2.2 V than the bare Cu. Ag in the bimetallic catalysts provides additional CO via desorption-re-adsorption and diffusion process for C[sbnd]C coupling on the Cu surface to synthesize C2H4. In addition, the improved performance of the Cu90Ag10 is attributed to not only the synergistic effect between Cu and Ag but also the appropriate Cu/Ag ratio.",

keywords = "Ag, Bimetallic catalyst, CO electroreduction, Carbon dioxide, Cu, Ethylene",

author = "Jeon, {Ye Eun} and Ko, {You Na} and Jongseok Kim and Hyuk Choi and Wonhee Lee and Kim, {Young Eun} and Doohwan Lee and Kim, {Hyun You} and Park, {Ki Tae}",

note = "Publisher Copyright: {\textcopyright} 2022 The Korean Society of Industrial and Engineering Chemistry",

year = "2022",

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doi = "10.1016/j.jiec.2022.09.009",

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T1 - Selective production of ethylene from CO2 over CuAg tandem electrocatalysts

AU - Jeon, Ye Eun

AU - Ko, You Na

AU - Kim, Jongseok

AU - Choi, Hyuk

AU - Lee, Wonhee

AU - Kim, Young Eun

AU - Lee, Doohwan

AU - Kim, Hyun You

AU - Park, Ki Tae

PY - 2022/12/25

Y1 - 2022/12/25

N2 - The electrochemical reduction reaction of CO2 (CO2RR) is desirable for decreasing CO2 concentration in the atmosphere and producing value-added chemicals. The development of advanced catalysts is a key challenge for the practical application of CO2RR. Recently, the bimetallic catalysts with two or more reaction sites acting synergistically are one of the most interesting catalysts. Herein, CuAg bimetallic catalysts with various Cu/Ag ratios are synthesized by the ultrasonic spray pyrolysis (USP) method for the selective production of ethylene (C2H4) via CO2RR. The electrocatalytic performances of the CuAg catalysts with different compositions are evaluated in a full flow single cell and the Cu90Ag10 exhibits 1.5 times the higher C2H4 Faradaic efficiency and the C2H4 current density at a cell voltage of 2.2 V than the bare Cu. Ag in the bimetallic catalysts provides additional CO via desorption-re-adsorption and diffusion process for C[sbnd]C coupling on the Cu surface to synthesize C2H4. In addition, the improved performance of the Cu90Ag10 is attributed to not only the synergistic effect between Cu and Ag but also the appropriate Cu/Ag ratio.

AB - The electrochemical reduction reaction of CO2 (CO2RR) is desirable for decreasing CO2 concentration in the atmosphere and producing value-added chemicals. The development of advanced catalysts is a key challenge for the practical application of CO2RR. Recently, the bimetallic catalysts with two or more reaction sites acting synergistically are one of the most interesting catalysts. Herein, CuAg bimetallic catalysts with various Cu/Ag ratios are synthesized by the ultrasonic spray pyrolysis (USP) method for the selective production of ethylene (C2H4) via CO2RR. The electrocatalytic performances of the CuAg catalysts with different compositions are evaluated in a full flow single cell and the Cu90Ag10 exhibits 1.5 times the higher C2H4 Faradaic efficiency and the C2H4 current density at a cell voltage of 2.2 V than the bare Cu. Ag in the bimetallic catalysts provides additional CO via desorption-re-adsorption and diffusion process for C[sbnd]C coupling on the Cu surface to synthesize C2H4. In addition, the improved performance of the Cu90Ag10 is attributed to not only the synergistic effect between Cu and Ag but also the appropriate Cu/Ag ratio.

KW - Ag

KW - Bimetallic catalyst

KW - CO electroreduction

KW - Carbon dioxide

KW - Cu

KW - Ethylene

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DO - 10.1016/j.jiec.2022.09.009

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SP - 191

EP - 198

JO - Journal of Industrial and Engineering Chemistry

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ER -

Selective production of ethylene from CO₂ over CuAg tandem electrocatalysts

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