Syngas Production from Electrochemical CO2 Reduction on Copper Oxide Electrodes in Aqueous Solution

Yao Xi; Guo Yafei; Liu Bingqian; Wang Puyao; Sun Jian; Li Weiling; Zhao Chuanwen

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Syngas Production from Electrochemical CO2 Reduction on Copper Oxide Electrodes in Aqueous Solution

机译：用电化学CO2减少水溶液中氧化铜电极的合成气

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Electrochemical CO2 reduction to value-added chemicals and fuels using renewable energy represents a promising strategy for reducing CO2 emissions and achieving effective energy storage. In this work, nano-sized CuO catalysts were prepared by using the homogeneous precipitation method for electrochemical CO2 reduction to CO. The CO2 reduction studies combined with the characterization results show that structure-activity relationships of the CuO catalysts depend on the calcination temperature. The as-synthesized CuO catalysts calcined at different temperatures are capable of reducing CO2 to generate syngas with tunable CO/H-2 ratios of 1 : 2 to 2 : 1. The desired CuO-400 catalyst exhibits good morphology, small particle size, and enriched oxygen-vacancy defects and, therefore, shows good performance for electrochemical CO2 reduction to CO. Under the given potential of -0.93 V vs. RHE, CuO-400 exhibits good reduction activity and selectivity with a great electrochemically active surface area normalized CO partial current density of 1.44 mA/cm(2) and a high CO faradaic efficiency of 48.2 %. The deactivation of CuO-400 in the long-term test is associated with the increase in particle size, the reduction of CuO to Cu2O and metallic Cu, and the coverage of surface active sites by the formed carbonate species. Our findings indicate that CuO catalysts with tunable physicochemical properties are promising candidates for electrochemical CO2 reduction to produce syngas.

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来源
《ChemElectroChem》 |2021年第3期|共11页
作者
Yao Xi; Guo Yafei; Liu Bingqian; Wang Puyao; Sun Jian; Li Weiling; Zhao Chuanwen;
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作者单位

Nanjing Normal Univ Sch Energy &

Mech Engn Engn Lab Energy Syst Proc Convers &

Emiss Control 2 Xuelin Rd Nanjing 210023 Peoples R China;

Nanjing Normal Univ Sch Energy &

Mech Engn Engn Lab Energy Syst Proc Convers &

Emiss Control 2 Xuelin Rd Nanjing 210023 Peoples R China;

Nanjing Normal Univ Sch Energy &

Mech Engn Engn Lab Energy Syst Proc Convers &

Emiss Control 2 Xuelin Rd Nanjing 210023 Peoples R China;

Nanjing Normal Univ Sch Energy &

Mech Engn Engn Lab Energy Syst Proc Convers &

Emiss Control 2 Xuelin Rd Nanjing 210023 Peoples R China;

Nanjing Normal Univ Sch Energy &

Mech Engn Engn Lab Energy Syst Proc Convers &

Emiss Control 2 Xuelin Rd Nanjing 210023 Peoples R China;

Nanjing Normal Univ Sch Energy &

Mech Engn Engn Lab Energy Syst Proc Convers &

Emiss Control 2 Xuelin Rd Nanjing 210023 Peoples R China;

Nanjing Normal Univ Sch Energy &

Mech Engn Engn Lab Energy Syst Proc Convers &

Emiss Control 2 Xuelin Rd Nanjing 210023 Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类物理化学（理论化学）、化学物理学;
关键词
syngas; electrochemical CO2 reduction; CuO electrodes; calcination temperature; structure-property-activity relationships;

机译：合成气;电化学二氧化碳还原;CUO电极;煅烧温度;结构 - 财产 - 活动关系;

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1. In situ Monitoring of the Rising of Aqueous Solution Meniscus for a Partially Immersed Silver Electrode during Electrochemical Reduction of Oxygen [J] . 谢青季, 张友玉, 郭阳辉, 中国化学（英文版） . 2001,第011期
2. Cloride-derived copper electrode for efficient electrochemical reduction of CO2 to ethylene [J] . Tian Qin, Yao Qian, Fan Zhang, 中国化学快报（英文版） . 2019,第002期
3. Syngas Production from Electrochemical CO2 Reduction on Copper Oxide Electrodes in Aqueous Solution (vol 8, 592, 2021) [J] . Yao Xi, Guo Yafei, Liu Bingqian, ChemElectroChem . 2021,第5期

机译：从电化学CO2减少在水溶液中的氧化铜电极上的合成气（Vol 8,592,2021）
4. Selective Electrochemical Reduction of CO2 to Ethylene on Nanopores-Modified Copper Electrodes in Aqueous Solution [J] . Peng Yuecheng, Wu Tian, Sun Libo, ACS applied materials & interfaces . 2017,第38期

机译：在水溶液中纳米孔改性铜电极CO2对乙烯的选择性电化学还原
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机译：通过在氨溶液中的硼掺杂金刚石电极上的CO 2的电化学还原选择性生产甲醇
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机译：水溶液中铂和金电极上咪唑鎓电化学还原的观点：咪唑鎓辅助CO2还原的意义。
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机译：Pd-MWNTs气体扩散电极在水性介质中将CO2电化学还原为有机酸
9. PRODUCTION OF METHANE AND ETHYLENE IN ELECTROCHEMICAL REDUCTION OF CARBON DIOXIDE AT COPPER ELECTRODE IN AQUEOUS HYDROGENCARBONATE SOLUTION [O] . Yoshio Hori, Katsuhei Kikuchi, Akira Murata, 1986

机译：甲烷和乙烯在碳酸氢盐水溶液中铜电极电化学氧化二氧化碳的制备
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机译：25至250℃硫酸氢盐水溶液中二氧化铅电极上苯的高压电化学氧化

Syngas Production from Electrochemical CO2 Reduction on Copper Oxide Electrodes in Aqueous Solution

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