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External electric field dependence of the structure of the electric double layer at an ionic liquid/Au interface
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10.1063/1.4742920
/content/aip/journal/apl/101/5/10.1063/1.4742920
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/5/10.1063/1.4742920
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Figures

Image of FIG. 1.
FIG. 1.

(a) Schematic diagram of the liquid sample cell. The ionic liquid was sealed with polyimide film. A Pt electrode was inserted into the liquid cavity to form a capacitor. (b) Scattered x-ray intensity profile along the Au (111) direction with applied voltage of . The horizontal axis is expressed in the reciprocal lattice unit of Au. The inset shows a cyclic voltammogram recorded for the system. (c) Change in intensity with applied voltage (V = 1.5 V) as a function of . Solid curves show the best fits obtained by 1- and 2-layer slab models. is defined as . (d) Difference in intensity for V = 3.0 V with best fits obtained by DC and 2L-slab models.

Image of FIG. 2.
FIG. 2.

(a) Electron density profile obtained using the 2L-slab model for 1.5 V. and regions correspond to Au and ionic liquid regions, respectively. (b) Electron density profile for  V obtained with the DC model. (c) Difference in electron density between and –V. Schematic profiles for a Helmholtz double layer (thin curve) and a crowding structure (dashed curve) calculated using the slab model are also presented.

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/content/aip/journal/apl/101/5/10.1063/1.4742920
2012-08-03
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: External electric field dependence of the structure of the electric double layer at an ionic liquid/Au interface
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/5/10.1063/1.4742920
10.1063/1.4742920
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