Effect of dissolved LiCl on the ionic liquid–Au(111) interface: an in situ STM study
Effect of dissolved LiCl on the ionic liquid–Au(111) interface: an in situ STM study
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DOI：
10.1088/0953-8984/26/28/284111
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发表时间：
2014-06
期刊：
影响因子：
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通讯作者：
N. Borisenko;R. Atkin;A. Lahiri;S. Abedin;F. Endres
中科院分区：
文献类型：
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作者：
N. Borisenko;R. Atkin;A. Lahiri;S. Abedin;F. Endres
电解质/电极界面的结构在电化学过程中起着重要作用。迄今为止，大多数研究都集中在了解纯离子液体的界面结构上。本文采用原位扫描隧道显微镜（STM）研究了在0.1 M LiCl存在下，荷电Au（111）-离子液体（1-丁基-1-甲基吡咯烷三（五氟乙基）三氟磷酸盐，[Py1，4] FAP）界面的结构。锂盐的加入对离子液体的界面结构有很强的影响。在第一次STM扫描中，原位测量显示Au（111）经历了（22 × 103？>）"人字形"重建在一定的电位制度，并有强有力的证据表明，金表面溶解在负电极电位在[Py1，4] FAP含有LiCl。在第二次STM扫描中，在-2.9 V下获得了Li的体沉积。
The structure of the electrolyte/electrode interface plays a significant role in electrochemical processes. To date, most studies are focusing on understanding the interfacial structure in pure ionic liquids. In this paper in situ scanning tunnelling microscopy (STM) has been employed to elucidate the structure of the charged Au(111)–ionic liquid (1-butyl-1-methylpyrrolidinium tris(pentafluoroethyl)trifluorophosphate, [Py1,4]FAP) interface in the presence of 0.1 M LiCl. The addition of the Li salt to the ionic liquid has a strong influence on the interfacial structure. In the first STM scan in situ measurements reveal that Au(111) undergoes the (22×√3?>) ‘herringbone’ reconstruction in a certain potential regime, and there is strong evidence that the gold surface dissolves at negative electrode potentials in [Py1,4]FAP containing LiCl. Bulk deposition of Li is obtained at −2.9 V in the second STM scan.