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Efficient Electrochemical Reduction of CO2 to CO in Ionic Liquids
Hu, Yanjie1,2; Feng, Jiaqi1; Zhang, Xiangping1; Gao, Hongshuai1; Jin, Saimeng3; Liu, Lei1; Shen, Weifeng3,4
2021-10-06
Source PublicationCHEMISTRYSELECT
ISSN2365-6549
Volume6Issue:37Pages:9873-9879
AbstractElectrochemical reduction of carbon dioxide (CO2) to CO is a promising strategy. However, achieving high Faradaic efficiency with high current density using ionic liquid (IL) electrolyte remains a challenge. In this study, the new IL N-octyltrimethyl ammonium 1,2,4-triazole ([N-1118][TRIZ]) shows outstanding performance for electrochemical reduction of CO2 to CO on the commercial Ag electrode, and the current density can be up to 50.8 mAcm(-2) with a Faradaic efficiency of 90.6 %. The current density of CO is much higher than those reported in the IL electrolyte. In addition, the density functional theory (DFT) calculation further proved that [N-1118][TRIZ] interact with CO2 to form [N-1118](+)[TRIZ-CO2](-) complex which played a key role in reducing the activation energy of CO2. The formation of [N-1118](+)[TRIZ-CO2](-) complex was verified by Fourier Transform Infrared (FTIR) spectroscopy. According to the molecular orbital theory, the electrons obtained from IL was filled in the anti-bonding orbit (pi*) of the CO2, resulting in reducing the C=O bond energy. This work provides a new strategy to design novel ILs for high efficiency electrochemical reduction of CO2 to CO.
KeywordIonic liquid CO2 reduction Electrolysis Carbon monoxide Density functional theory
DOI10.1002/slct.202102825
Language英语
WOS KeywordELECTROCATALYTIC REDUCTION ; CARBON-DIOXIDE ; CONVERSION ; ELECTRODE ; CAPTURE
Funding Projectprogram of Beijing Municipal Natural Science Foundation[2182072] ; program of Beijing Municipal Natural Science Foundation[2182071]
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding Organizationprogram of Beijing Municipal Natural Science Foundation
WOS IDWOS:000704246900018
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/50270
Collection中国科学院过程工程研究所
Corresponding AuthorLiu, Lei; Shen, Weifeng
Affiliation1.Chinese Acad Sci, Key Lab Green Proc & Engn, State Key Lab Multiphase Complex Syst, Beijing Key Lab Ion Liquids Clean Proc,Inst Proc, Beijing 100190, Peoples R China
2.Guangdong Univ Technol, Sch Mat & Energy, Guangzhou 510006, Peoples R China
3.Chongqing Univ, Sch Chem & Chem Engn, Chongqing 400044, Peoples R China
4.Chongqing Key Lab Theoret & Computat Chem, Chongqing 400044, Peoples R China
Recommended Citation
GB/T 7714
Hu, Yanjie,Feng, Jiaqi,Zhang, Xiangping,et al. Efficient Electrochemical Reduction of CO2 to CO in Ionic Liquids[J]. CHEMISTRYSELECT,2021,6(37):9873-9879.
APA Hu, Yanjie.,Feng, Jiaqi.,Zhang, Xiangping.,Gao, Hongshuai.,Jin, Saimeng.,...&Shen, Weifeng.(2021).Efficient Electrochemical Reduction of CO2 to CO in Ionic Liquids.CHEMISTRYSELECT,6(37),9873-9879.
MLA Hu, Yanjie,et al."Efficient Electrochemical Reduction of CO2 to CO in Ionic Liquids".CHEMISTRYSELECT 6.37(2021):9873-9879.
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