Dependence on the crystallographic orientation of Au for the potential window of the electrical double-layer region in imidazolium-based ionic liquids
Dependence on the crystallographic orientation of Au for the potential window of the electrical double-layer region in imidazolium-based ionic liquids
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DOI：
10.1016/j.elecom.2012.03.049
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发表时间：
2012-07-01
影响因子：
5.4
通讯作者：
Nishiyama, Katsuhiko
中科院分区：
文献类型：
--
作者：
Yoshimoto, Soichiro;Taguchi, Ryo;Nishiyama, Katsuhiko
采用循环伏安法在低指数Au单晶电极上研究了双（三氟甲基磺酰基）亚胺基离子液体1-乙基-3-甲基咪唑、1-丁基-3-甲基咪唑、1-己基-3-甲基咪唑、1-甲基-3-辛基咪唑和1-癸基-3-甲基咪唑阳离子的烷基链长对电位窗口的影响。发现双电层区域的电位窗口取决于Au的晶体取向，这表明Au衬底上阳离子吸附强度的差异。电双层区的电位窗口也依赖于咪唑阳离子的烷基链长度。(c) 2012 Elsevier B.V.版权所有
The influence of the alkyl chain length of the bis(trifluoromethylsulfonyl)imide-based ionic liquids 1-ethyl-3-methylimidazolium, 1-butyl-3-methylimidazolium, 1-hexyl-3-methylimidazolium, 1-methyl-3-octylimidazolium, and 1-decyl-3-methylimidazolium cation on the potential window was investigated with low-index Au single crystal electrodes by cyclic voltammetry. The potential window of the electrical double-layer region was found to depend on the crystallographic orientation of Au, which indicated a difference in the strength of cation adsorption on the Au substrate. The potential window of the electrical double-layer region was also dependent upon the alkyl chain length of the imidazolium cation. (c) 2012 Elsevier B.V. All rights reserved.