Interface properties and physicochemical characterization of the low-temperature molten salt Li/K/Cs acetate

Deyko A, Bajus S, Rietzler F, Bösmann A, Wasserscheid P, Steinrück HP, Maier F (2013)


Publication Type: Journal article

Publication year: 2013

Journal

Original Authors: Deyko A., Bajus S., Rietzler F., Bösmann A., Wasserscheid P., Steinrück H.-P., Maier F.

Publisher: American Chemical Society

Book Volume: 117

Pages Range: 22939-22946

Journal Issue: 44

DOI: 10.1021/jp407689c

Abstract

The surface of macroscopic films of the ternary molten salt mixture Li KCs[OAc] has been investigated by angle-resolved X-ray photoelectron spectroscopy (XPS) as a function of temperature. With increasing temperature a preferential depletion of K is observed by ∼40%. From temperature programmed desorption we find that the onset for the cation desorption follows the order Cs, K, and Li, with activation energies of 125, 148, and 157 kJ mol, respectively; the corresponding value for the [OAc] anion is 147 kJ mol, which is, within the margin of error, identical to the average of the value found for the cations. Ultrathin films of the molten salt deposited on a Au(111) surface by physical vapor deposition show preferential enrichment of Cs, in line with the lower activation energy and thus higher desorption rate of Cs[OAc] from the ternary mixture. Angle-resolved XPS of the molten salt/gold interface demonstrates that the first molten salt monolayer grows in a layer-by-layer growth, followed by three-dimensional island growth at higher coverages. © 2013 American Chemical Society.

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APA:

Deyko, A., Bajus, S., Rietzler, F., Bösmann, A., Wasserscheid, P., Steinrück, H.-P., & Maier, F. (2013). Interface properties and physicochemical characterization of the low-temperature molten salt Li/K/Cs acetate. Journal of Physical Chemistry C, 117(44), 22939-22946. https://doi.org/10.1021/jp407689c

MLA:

Deyko, Alexey, et al. "Interface properties and physicochemical characterization of the low-temperature molten salt Li/K/Cs acetate." Journal of Physical Chemistry C 117.44 (2013): 22939-22946.

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