Ternary Ionic-Liquid-Based Electrolyte Enables Efficient Electro-reduction of CO2over Bulk Metal Electrodes

Jiahao Yang; Xinchen Kang; Jiapeng Jiao; Xueqing Xing; Yaoyu Yin; Shuaiqiang Jia; Mengen Chu; Shitao Han; Wei Xia; Haihong Wu; Mingyuan He; Buxing Han

doi:10.1021/jacs.3c03259

Ternary Ionic-Liquid-Based Electrolyte Enables Efficient Electro-reduction of CO₂over Bulk Metal Electrodes

Jiahao Yang, Xinchen Kang^*, Jiapeng Jiao, Xueqing Xing, Yaoyu Yin, Shuaiqiang Jia, Mengen Chu, Shitao Han, Wei Xia, Haihong Wu^*, Mingyuan He, Buxing Han^*

^*Corresponding author for this work

School of Chemistry and Molecular Engineering

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

45 Scopus citations

Abstract

Using bulk metals as catalysts to get high efficiency in electro-reduction of CO₂is ideal but challenging. Here, we report the coupling of bulk metal electrodes and a ternary ionic-liquid-based electrolyte, 1-butyl-3-methylimidazolium tetrafluoroborate/1-dodecyl-3-methylimidazolium tetrafluoroborate/MeCN to realize highly efficient electro-reduction of CO₂to CO. Over various bulk metal electrodes, the ternary electrolyte not only increases the current density but also suppresses the hydrogen evolution reaction to obtain a high Faradaic efficiency (FE) toward CO. FE_COcould maintain ∼100% over a wide potential range, and metal electrodes showed very high stability in the ternary electrolyte.

Original language	English
Pages (from-to)	11512-11517
Number of pages	6
Journal	Journal of the American Chemical Society
Volume	145
Issue number	21
DOIs	https://doi.org/10.1021/jacs.3c03259
State	Published - 31 May 2023

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title = "Ternary Ionic-Liquid-Based Electrolyte Enables Efficient Electro-reduction of CO2over Bulk Metal Electrodes",

abstract = "Using bulk metals as catalysts to get high efficiency in electro-reduction of CO2is ideal but challenging. Here, we report the coupling of bulk metal electrodes and a ternary ionic-liquid-based electrolyte, 1-butyl-3-methylimidazolium tetrafluoroborate/1-dodecyl-3-methylimidazolium tetrafluoroborate/MeCN to realize highly efficient electro-reduction of CO2to CO. Over various bulk metal electrodes, the ternary electrolyte not only increases the current density but also suppresses the hydrogen evolution reaction to obtain a high Faradaic efficiency (FE) toward CO. FECOcould maintain ∼100\% over a wide potential range, and metal electrodes showed very high stability in the ternary electrolyte.",

author = "Jiahao Yang and Xinchen Kang and Jiapeng Jiao and Xueqing Xing and Yaoyu Yin and Shuaiqiang Jia and Mengen Chu and Shitao Han and Wei Xia and Haihong Wu and Mingyuan He and Buxing Han",

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doi = "10.1021/jacs.3c03259",

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T1 - Ternary Ionic-Liquid-Based Electrolyte Enables Efficient Electro-reduction of CO2over Bulk Metal Electrodes

AU - Yang, Jiahao

AU - Kang, Xinchen

AU - Jiao, Jiapeng

AU - Xing, Xueqing

AU - Yin, Yaoyu

AU - Jia, Shuaiqiang

AU - Chu, Mengen

AU - Han, Shitao

AU - Xia, Wei

AU - Wu, Haihong

AU - He, Mingyuan

AU - Han, Buxing

PY - 2023/5/31

Y1 - 2023/5/31

N2 - Using bulk metals as catalysts to get high efficiency in electro-reduction of CO2is ideal but challenging. Here, we report the coupling of bulk metal electrodes and a ternary ionic-liquid-based electrolyte, 1-butyl-3-methylimidazolium tetrafluoroborate/1-dodecyl-3-methylimidazolium tetrafluoroborate/MeCN to realize highly efficient electro-reduction of CO2to CO. Over various bulk metal electrodes, the ternary electrolyte not only increases the current density but also suppresses the hydrogen evolution reaction to obtain a high Faradaic efficiency (FE) toward CO. FECOcould maintain ∼100% over a wide potential range, and metal electrodes showed very high stability in the ternary electrolyte.

AB - Using bulk metals as catalysts to get high efficiency in electro-reduction of CO2is ideal but challenging. Here, we report the coupling of bulk metal electrodes and a ternary ionic-liquid-based electrolyte, 1-butyl-3-methylimidazolium tetrafluoroborate/1-dodecyl-3-methylimidazolium tetrafluoroborate/MeCN to realize highly efficient electro-reduction of CO2to CO. Over various bulk metal electrodes, the ternary electrolyte not only increases the current density but also suppresses the hydrogen evolution reaction to obtain a high Faradaic efficiency (FE) toward CO. FECOcould maintain ∼100% over a wide potential range, and metal electrodes showed very high stability in the ternary electrolyte.

UR - https://www.scopus.com/pages/publications/85160747536

U2 - 10.1021/jacs.3c03259

DO - 10.1021/jacs.3c03259

M3 - 文章

C2 - 37196054

AN - SCOPUS:85160747536

SN - 0002-7863

VL - 145

SP - 11512

EP - 11517

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 21

ER -

Ternary Ionic-Liquid-Based Electrolyte Enables Efficient Electro-reduction of CO₂over Bulk Metal Electrodes

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