An XAS Study of the Local Environment of Ions in Soggy Sand Electrolytes

Edwards, W. V.; Bhattacharyya, A. J.; Chadwick, A. V.; Maier, J.

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An XAS Study of the Local Environment of Ions in Soggy Sand Electrolytes

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Edwards, W. V.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Bhattacharyya, A. J.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Maier, J.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Edwards, W. V., Bhattacharyya, A. J., Chadwick, A. V., & Maier, J. (2006). An XAS Study of the Local Environment of Ions in Soggy Sand Electrolytes. Electrochemical and Solid-State Letters, 9(12), A564-A567.

Cite as: https://hdl.handle.net/21.11116/0000-000E-FFBB-1

Abstract

In this paper via X-ray absorption spectroscopy (XAS) studies we
discuss the local ion environment in two different "soggy sand"
electrolyte systems: RbBr in ethylene carbonate-dimethyl carbonate
(EC-DMC):SiO2 and LiBr in tetrahydrofuran (THF):SiO2. The X-ray
absorption near edge structure results for the RbBr in EC-DMC:SiO2
showed marked changes for the Br K-edge and almost no change for the Rb
K-edge in the composite compared to the pure solution. Quantitative
analysis of Br K-edge from extended X-ray absorption fine structure in
LiBr in THF:SiO2 showed pronounced ordering in the Br- ions which
arises from the trapping of the Br- on the surface of the silica. (c)
2006 The Electrochemical Society.