Electrochemistry
Online ISSN : 2186-2451
Print ISSN : 1344-3542
ISSN-L : 1344-3542
UNCORRECTED PROOF
Phenoxyimine Ligand Molecular Structure Influence on Reversible Magnesium Electrode Reaction in a Magnesium Chloride Complex
Minato EGASHIRAKouki MATSUBARA
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JOURNALS OPEN ACCESS Advance online publication

Article ID: 21-00041

UNCORRECTED PROOF: May 21, 2021
ACCEPTED MANUSCRIPT: April 28, 2021
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Abstract

Non-aqueous electrolytes containing magnesium chloride complex in which magnesium is coordinated by synthesized phenoxyimine ligand have unique properties for magnesium deposition and dissolution. Those properties have been compared using ligands with different terminal groups. For electrochemical and Raman spectroscopic studies, mixed electrolytes were prepared by dissolving a phenoxyimine–magnesium-chloride complex and magnesium [bis(trifluoromethane sulfonyl)imide] in triglyme solvent. An electrolyte containing phenoxyimine with an n-butyl terminal group shows higher Coulombic efficiency of magnesium deposition than the electrolyte prepared with dimethylamine-terminated phenoxyimine, probably because of preferred formation of active triglyme–magnesium-chloride coordinated cations. By contrast, adding aluminum chloride to the electrolyte with n-butyl-terminated phenoxyimine adversely affected reversible magnesium deposition, probably because trapping of chloride occurred preferentially.

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© The Author(s) 2021. Published by ECSJ.

This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium provided the original work is properly cited. [DOI: 10.5796/electrochemistry.21-00041].
http://creativecommons.org/licenses/by/4.0/
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