Synthesis and physical properties of new fluoroether sulfones

[Display omitted] •Eight new fluoroether sulfone compounds have been synthesized and characterized.•Some of the derivatives displayed low viscosity compared to similar non-fluoro analogs.•Several binary electrolytes of these compounds with 1,2-dimethoxyethane have been prepared.•Some of these electr...

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Bibliographic Details
Published in:Journal of fluorine chemistry 2018-12, Vol.216, p.118-123
Main Authors: Yue, Zheng, Mei, Xinyi, Dunya, Hamza, Ma, Qiang, McGarry, Christopher, Mandal, Braja K.
Format: Article
Language:English
Subjects:
Additives
Conductivity
Electrolytes
Fluoroether sulfones
Formulations
Ion currents
Ionic conductivity
Ions
Lithium
Lithium sulfur batteries
NMR
Nuclear magnetic resonance
Physical properties
Solvents
Sulfones
Sulfur
Viscosity
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Summary:[Display omitted] •Eight new fluoroether sulfone compounds have been synthesized and characterized.•Some of the derivatives displayed low viscosity compared to similar non-fluoro analogs.•Several binary electrolytes of these compounds with 1,2-dimethoxyethane have been prepared.•Some of these electrolytes displayed good ionic conductivity suitable for Li-S batteries. Eight new strategically designed fluoroether sulfone solvents have been synthesized through different synthetic pathways for potential applications in lithium-sulfur battery electrolytes. The structures of these compounds have been confirmed by 1H-NMR, 13C-NMR and elemental analysis. Several 1,2-dimethoxyethane (DME)-based electrolyte formulations have been prepared with these solvents to derive an electrolyte with good ionic conductivity (>5 mS cm−1 at 25  ℃). The viscosity of these new additives has also been determined as it is directly related to the ionic conductivity. Three of these solvents that contain a trifluoromethyl group displayed acceptable ionic conductivity.
ISSN:0022-1139
1873-3328
DOI:10.1016/j.jfluchem.2018.10.014