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  Interfacial Layering and Screening Behavior of Glyme-Based Lithium Electrolytes

Nojabaee, M., Cheng, H.-W., Valtiner, M., Popovic, J., & Maier, J. (2018). Interfacial Layering and Screening Behavior of Glyme-Based Lithium Electrolytes. The Journal of Physical Chemistry Letters, 9(3), 577-582. doi:10.1021/acs.jpclett.7b03307.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-607D-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-607E-6
Genre: Journal Article

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 Creators:
Nojabaee, Maryam1, Author              
Cheng, Hsiu-Wei2, 3, Author              
Valtiner, Markus2, Author              
Popovic, Jelena1, Author              
Maier, Joachim1, Author              
Affiliations:
1Max Planck Institute for Solid State Research, Stuttgart, Germany, persistent13              
2Interaction Forces and Functional Materials, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863357              
3Institute of Applied Physics, Vienna University of Technology, Vienna, Austria, persistent22              

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Free keywords: DRESSED-ION THEORY; SOGGY-SAND ELECTROLYTES; CONCENTRATED ELECTROLYTES; MUSCOVITE MICA; SALT; LIQUIDS; BATTERIES; STABILITY; EXCHANGE; CHARGESChemistry; Science & Technology - Other Topics; Materials Science; Physics;
 Abstract: Understanding of electrical double layers is essential to all electrochemical devices, particularly at high charge carrier concentrations. Using a combined approach (surface force apparatus, zeta potential, infrared spectroscopy), we propose a model for the interfacial structure of triglyme electrolytes on muscovite mica. In contact with the pure triglyme, a brush-like polymeric structure grows on the mica surface. When lithium triflate is present in the triglyme, this structure is suppressed by anion adsorption and an extended double layer is formed. A surprising result of great fundamental significance is that the effective screening length measured by surface force apparatus at considerable lithium triflate concentrations (above 0.2 M) is substantially higher than expected from the Debye-Huckel theory. This suggests a high degree of complex salt association as a novel characteristic feature of salt-containing electrolytes.

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Language(s): eng - English
 Dates: 2018-02-01
 Publication Status: Published in print
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Degree: -

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Title: The Journal of Physical Chemistry Letters
  Abbreviation : J. Phys. Chem. Lett.
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 9 (3) Sequence Number: - Start / End Page: 577 - 582 Identifier: CoNE: https://pure.mpg.de/cone/journals/resource/1948-7185