Structural Analysis of Magnesium Chloride Complexes in Dimethoxyethane Solutions in the Context of Mg Batteries Research

Michael Salama; Ivgeni Shterenberg; Linda J.W. Shimon; Keren Keinan-Adamsky; Michal Afri; Yosef Gofer; Doron Aurbach

doi:10.1021/acs.jpcc.7b05452

Structural Analysis of Magnesium Chloride Complexes in Dimethoxyethane Solutions in the Context of Mg Batteries Research

Michael Salama, Ivgeni Shterenberg, Linda J.W. Shimon, Keren Keinan-Adamsky, Michal Afri, Yosef Gofer, Doron Aurbach

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

115 Scopus citations

Abstract

Recently, MgTFSI₂/MgCl₂ electrolyte solutions in dimethoxyethane (DME) have been shown to function as viable electrolyte solutions for secondary Mg batteries that can facilitate reversible magnesium deposition/dissolution. MgCl₂ is a crucial component in these solutions. On its own, however, it is practically insoluble in DME. Therefore, the fact that it is readily dissolved in MgTFSI₂/DME solution is remarkable. Addition of MgCl₂ greatly improves the electrochemical performance of MgTFSI₂/DME electrolyte solutions. Thus, identifying the species formed in MgTFSI₂/MgCl₂ solutions is intriguing. In this study, we implemented a wide variety of analytical tools, including single crystal X-ray diffraction, multinuclear NMR, and Raman spectroscopy, to elucidate the structure of these solutions. Various solution species were determined, and a suitable reaction scheme is suggested.

Original language	English
Pages (from-to)	24909-24918
Number of pages	10
Journal	Journal of Physical Chemistry C
Volume	121
Issue number	45
DOIs	https://doi.org/10.1021/acs.jpcc.7b05452
State	Published - 16 Nov 2017

Bibliographical note

Publisher Copyright:
© 2017 American Chemical Society.

Funding

Partial support for this work was obtained from the Israel Science Foundation (ISF) in the framework of the INREP project.

Funders	Funder number
Israel Science Foundation

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10.1021/acs.jpcc.7b05452

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title = "Structural Analysis of Magnesium Chloride Complexes in Dimethoxyethane Solutions in the Context of Mg Batteries Research",

abstract = "Recently, MgTFSI2/MgCl2 electrolyte solutions in dimethoxyethane (DME) have been shown to function as viable electrolyte solutions for secondary Mg batteries that can facilitate reversible magnesium deposition/dissolution. MgCl2 is a crucial component in these solutions. On its own, however, it is practically insoluble in DME. Therefore, the fact that it is readily dissolved in MgTFSI2/DME solution is remarkable. Addition of MgCl2 greatly improves the electrochemical performance of MgTFSI2/DME electrolyte solutions. Thus, identifying the species formed in MgTFSI2/MgCl2 solutions is intriguing. In this study, we implemented a wide variety of analytical tools, including single crystal X-ray diffraction, multinuclear NMR, and Raman spectroscopy, to elucidate the structure of these solutions. Various solution species were determined, and a suitable reaction scheme is suggested.",

author = "Michael Salama and Ivgeni Shterenberg and Shimon, \{Linda J.W.\} and Keren Keinan-Adamsky and Michal Afri and Yosef Gofer and Doron Aurbach",

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AU - Salama, Michael

AU - Shterenberg, Ivgeni

AU - Shimon, Linda J.W.

AU - Keinan-Adamsky, Keren

AU - Afri, Michal

AU - Gofer, Yosef

AU - Aurbach, Doron

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AB - Recently, MgTFSI2/MgCl2 electrolyte solutions in dimethoxyethane (DME) have been shown to function as viable electrolyte solutions for secondary Mg batteries that can facilitate reversible magnesium deposition/dissolution. MgCl2 is a crucial component in these solutions. On its own, however, it is practically insoluble in DME. Therefore, the fact that it is readily dissolved in MgTFSI2/DME solution is remarkable. Addition of MgCl2 greatly improves the electrochemical performance of MgTFSI2/DME electrolyte solutions. Thus, identifying the species formed in MgTFSI2/MgCl2 solutions is intriguing. In this study, we implemented a wide variety of analytical tools, including single crystal X-ray diffraction, multinuclear NMR, and Raman spectroscopy, to elucidate the structure of these solutions. Various solution species were determined, and a suitable reaction scheme is suggested.

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Structural Analysis of Magnesium Chloride Complexes in Dimethoxyethane Solutions in the Context of Mg Batteries Research

Abstract

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