Electrochemical Impedance Studies of CO2 Reduction in Ionic Liquid/Organic Solvent Electrolyte on Au Electrode

Electrochemical Impedance Studies of CO2 Reduction in Ionic Liquid/Organic Solvent Electrolyte on Au Electrode
复制标题

Au电极上离子液体/有机溶剂电解质中CO2还原的电化学阻抗研究

DOI:
10.1016/j.electacta.2015.12.025
复制
发表时间:
2016-01
影响因子:
6.6
通讯作者:
Jin Shi
Jin Shi
中科院分区:
材料科学2区
文献类型:
--
作者:
Qing-yuan Li;Fengxia Shen;Qin Wang;Jin Shi

文献摘要

参考文献

被引文献

相似文献

研究了1-丁基-3-甲基咪唑三氟甲磺酸([Bmim][CF3SO3])/碳酸亚丙酯(PC)溶液中CO2在Au电极上的电化学还原。线性扫描伏安测试表明,[Bmim][CF3SO3]对CO2还原有明显的催化作用。为了研究[Bmim][CF3SO3]/PC在Au电极上的CO_2还原机理,采用了电化学阻抗谱的方法。实验结果表明,在[Bmim][CF3SO3]/PC溶液中测得的电化学阻抗谱与在三氟甲磺酸四丁基铵([Bu4N][CF3SO3])/PC溶液中测得的不同。合理的解释是[Bmim]+吸附在Au电极上,形成离子液体膜。在CO_2还原过程中,吸附的CO_2通过单电子转移被还原为CO_2自由基点−。生成的CO_2自由基点−自由基与[Bmim]+相互作用,形成[Bmim-CO_2](Ad)。从而降低了CO2还原的活化能和过电势。电化学阻抗谱可以作为研究非水溶液中CO2还原机理的一种方法。
Electrochemical reduction of CO2has been studied in 1-butyl-3-methylimidazolium trifluoromethanesulfonate ([Bmim][CF3SO3])/propylene carbonate (PC) solution on Au electrode. The linear sweep voltammetry measurements show that [Bmim][CF3SO3] has significant catalytic effect toward CO2reduction. In order to study the mechanism of CO2reduction in [Bmim][CF3SO3]/PC on Au electrode, the electrochemical impedance spectroscopy is employed. The experiment results show that the electrochemical impedance spectroscopy detected in [Bmim][CF3SO3]/PC is different from that detected in tetrabutylammonium trifluoromethanesulfonate ([Bu4N][CF3SO3])/PC solution. The reasonable explanation is that [Bmim]+is absorbed on the Au electrode, leading to the formation of ionic liquid film. During the CO2reduction process, absorbed CO2is reduced to CO2radical dot−radical via single electron transfer. The generated CO2radical dot−radical interacts with [Bmim]+and inducing the formation of [Bmim-CO2](ad). Thus, the activation energy and overpotential of CO2reduction are reduced. The electrochemical impedance spectroscopy can be used as a methods to investigate the mechanism of CO2reduction in non-aqueous solution.
DOI: 10.1016/j.jpowsour.2014.02.072
发表时间: 2014-08
影响因子: 9.2
作者:
Jin Shi;Feng Shi;Ning Song;Jian-xiong Liu;Xikun Yang;Jia Youjian;Z. Xiao;Ping Du
通讯作者: Jin Shi;Feng Shi;Ning Song;Jian-xiong Liu;Xikun Yang;Jia Youjian;Z. Xiao;Ping Du
DOI: 10.1002/9783527629152
发表时间: 2002-05
期刊: --
影响因子: --
作者:
K. Izutsu
通讯作者: K. Izutsu
DOI: 10.1016/s1452-3981(23)11030-3
发表时间: 2014-12
影响因子: 1.5
作者:
Lan, Yang-Chun;Ma, Si-Chao;Kenis, Paul J. A.;Lu, Jia-Xing
通讯作者: Lu, Jia-Xing
DOI: 10.1021/je3001377
发表时间: 2012-11
影响因子: --
作者:
Y. Jung;Jun-Young Jung;Yusuke Jin;Byung-chul Lee;I. Baek;S. H. Kim
通讯作者: Y. Jung;Jun-Young Jung;Yusuke Jin;Byung-chul Lee;I. Baek;S. H. Kim
DOI: 10.1016/j.electacta.2013.10.162
发表时间: 2014-05-10
影响因子: 6.6
作者:
Lates, V.;Falch, A.;Kriek, R. J.
通讯作者: Kriek, R. J.