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Title: Synergistic Effects of Mixing Sulfone and Ionic Liquid as Safe Electrolytes for Lithium Sulfur Batteries

Abstract

Here we report a strategy of mixing both the ionic liquid and sulfone with synergistic effects of reducing viscosity, increasing ionic conductivity, reducing the polysulfide dissolution, and improving the safety. The mixtures of the ionic liquids and sulfones also show distinctly different physicochemical properties, including the thermal properties and crystallization behavior. Using these electrolytes, lithium sulfur batteries assembled with lithium and mesoporous carbon composites show a reversible specific capacity of 1265 mAh g-1 (second cycle) by using 40% 1.0 M LiTFSI in MPPY∙TFSI with 60% 1.0 M LiTFSI in MIPS in the first cycle. This capacity is slightly lower than what was obtained in the pure 1.0 M LiTFSI in the sulfone electrolytes; however, it exhibits an excellent cycling stability and remains as high as 655 mAh g-1 even after 50 cycles. Our strategy provides a method to alleviate the polysulfide dissolution and redox shuttle phenomenon, with an improved ionic conductivity at the same time.

Authors:
; ; ;
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1392546
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
ChemSusChem
Additional Journal Information:
Journal Volume: 8; Journal Issue: 2; Journal ID: ISSN 1864-5631
Publisher:
ChemPubSoc Europe
Country of Publication:
United States
Language:
English
Subject:
electrochemistry; ionic liquids; lithium–sulfur batteries; polymers; sulfones

Citation Formats

Liao, Chen, Guo, Bingkun, Sun, Xiao-Guang, and Dai, Sheng. Synergistic Effects of Mixing Sulfone and Ionic Liquid as Safe Electrolytes for Lithium Sulfur Batteries. United States: N. p., 2014. Web. doi:10.1002/cssc.201402800.
Liao, Chen, Guo, Bingkun, Sun, Xiao-Guang, & Dai, Sheng. Synergistic Effects of Mixing Sulfone and Ionic Liquid as Safe Electrolytes for Lithium Sulfur Batteries. United States. https://doi.org/10.1002/cssc.201402800
Liao, Chen, Guo, Bingkun, Sun, Xiao-Guang, and Dai, Sheng. 2014. "Synergistic Effects of Mixing Sulfone and Ionic Liquid as Safe Electrolytes for Lithium Sulfur Batteries". United States. https://doi.org/10.1002/cssc.201402800.
@article{osti_1392546,
title = {Synergistic Effects of Mixing Sulfone and Ionic Liquid as Safe Electrolytes for Lithium Sulfur Batteries},
author = {Liao, Chen and Guo, Bingkun and Sun, Xiao-Guang and Dai, Sheng},
abstractNote = {Here we report a strategy of mixing both the ionic liquid and sulfone with synergistic effects of reducing viscosity, increasing ionic conductivity, reducing the polysulfide dissolution, and improving the safety. The mixtures of the ionic liquids and sulfones also show distinctly different physicochemical properties, including the thermal properties and crystallization behavior. Using these electrolytes, lithium sulfur batteries assembled with lithium and mesoporous carbon composites show a reversible specific capacity of 1265 mAh g-1 (second cycle) by using 40% 1.0 M LiTFSI in MPPY∙TFSI with 60% 1.0 M LiTFSI in MIPS in the first cycle. This capacity is slightly lower than what was obtained in the pure 1.0 M LiTFSI in the sulfone electrolytes; however, it exhibits an excellent cycling stability and remains as high as 655 mAh g-1 even after 50 cycles. Our strategy provides a method to alleviate the polysulfide dissolution and redox shuttle phenomenon, with an improved ionic conductivity at the same time.},
doi = {10.1002/cssc.201402800},
url = {https://www.osti.gov/biblio/1392546}, journal = {ChemSusChem},
issn = {1864-5631},
number = 2,
volume = 8,
place = {United States},
year = {Wed Nov 26 00:00:00 EST 2014},
month = {Wed Nov 26 00:00:00 EST 2014}
}

Works referenced in this record:

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Works referencing / citing this record:

Recent Advances in Electrolytes for Lithium-Sulfur Batteries
journal, April 2015


Graphene-Based Nanocomposites for Energy Storage
journal, June 2016


Halide-Free Synthesis of Hydrochalcogenide Ionic Liquids of the Type [Cation][HE] (E=S, Se, Te)
journal, February 2016


A hybrid ionic liquid-based electrolyte for high-performance lithium–sulfur batteries
journal, January 2020


A Rational Balance Design of Hybrid Electrolyte Based on Ionic Liquid and Fluorinated Ether in Lithium Sulfur Batteries
journal, January 2019


Efficient Electrolytes for Lithium–Sulfur Batteries
journal, May 2015


Developments of Electrolyte Systems for Lithium–Sulfur Batteries: A Review
journal, February 2015