Design of S-Substituted Fluorinated Aryl Sulfonamide-Tagged (S-FAST) Anions To Enable New Solvate Ionic Liquids for Battery Applications
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acs.chemmater.9b02353.pdf
Description
Published version
Size
2.17 MB
Format
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Checksum (MD5)
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Author(s)
Huang, Mingjun
Feng, Shuting
Zhang, Wenxu
Lopez, Jeremy
Qiao, Bo
Tatara, Ryoichi
Giordano, Livia
Shao-Horn, Yang
Johnson, Jeremiah A.
Date Issued
August 2019
Journal
Chemistry of Materials
Publisher
American Chemical Society (ACS)
Citation
Huang, Mingjun et al. "Design of S-Substituted Fluorinated Aryl Sulfonamide-Tagged (S-FAST) Anions To Enable New Solvate Ionic Liquids for Battery Applications." Chemistry of Materials 31, 18 (August 2019): 7558-7564 © 2019 American Chemical Society
Version
Final published version
Abstract
Electrolytes with improved thermal and oxidative stability must be developed to achieve greater power and energy densities without compromising safety in modern energy storage devices. Because of their much-reduced solvent vapor pressure and expanded electrochemical windows, solvate ionic liquids (SILs) of lithium salts have recently attracted significant attention in this regard. The current palette of SILs is, however, limited to only a few suitable anions with limited chemical functionality. Guided by fundamental physical organic chemistry principles, we designed a new family of S-substituted fluorinated aryl sulfonamide-tagged anions that feature variable numbers of electronically neutral or withdrawing sulfide, sulfoxide, and sulfone substituents. Several salts of these electron deficient anions display very high electrochemical oxidative stability, good solubility, and a weakly coordinating nature that enables the synthesis of Li-based SILs with high thermal and electrochemical oxidative stability. This new family of functional, noncoordinating anions will potentially expand the scope of applications of SILs as safe electrolytes in battery devices.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Massachusetts Institute of Technology. Department of Chemical Engineering
Massachusetts Institute of Technology. Research Laboratory of Electronics
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Creative Commons Attribution-NonCommercial-NoDerivs License
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DOI of Published Version
https://doi.org/10.1021/acs.chemmater.9b02353
