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Citation
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HERO ID
3860642
Reference Type
Journal Article
Title
Liquid perfluoropolyether electrolytes with enhanced ionic conductivity for lithium battery applications
Author(s)
Olson, KR; Wong, DHC; Chintapalli, M; Timachova, K; Janusziewicz, R; Daniel, WFM; Mecham, Sue; Sheiko, S; Balsara, NP; Desimone, JM
Year
2016
Is Peer Reviewed?
1
Journal
Polymer
ISSN:
0032-3861
Volume
100
Page Numbers
126-133
DOI
10.1016/j.polymer.2016.08.020
Web of Science Id
WOS:000383925800016
Abstract
We prepared nonflammable liquid polymer electrolytes for lithium-ion batteries by mixing ethoxylated perfluoropolyethers (PFPEs) with LiN(SO2CF3)(2) salt. Interestingly, we identified the presence of chain coupling in the PFPE polymers and their functionalized derivatives, resulting in a mixture of PFPEs with varying molecular weights. The distribution of molecular weights, along with PFPE's multiple functionalities, allows systematic manipulation of structure to enhance electrochemical and physical properties. Furthermore, the electrolytes exhibited a wide thermal stability window (5% degradation temperature >180 degrees C). Despite substantial increases in viscosity upon loading the PFPEs with lithium salt, the conductivity (sigma approximate to 5 x 10(-5) S cm(-1) at 28 degrees C) of the novel electrolytes was about an order of magnitude higher than that of our previously reported PFPE electrolytes. Ethoxylated derivatives of PFPE electrolytes exhibit elevated conductivity compared to non-ethoxylated derivatives, demonstrating our capability to enhance the conductive properties of the PFPE platform by attaching various functional groups to the polymer backbone. (C) 2016 Elsevier Ltd. All rights reserved.
Keywords
Perfluoropolyether; Electrolyte; Battery
Tags
PFAS
•
Expanded PFAS SEM (formerly PFAS 430)
Perfluoropentanesulfonate
•
^Per- and Polyfluoroalkyl Substances (PFAS)
PFPeS (2706-91-4)
Literature Search
WOS
•
PFPeS
Literature Search
WOS
Screening Results
Excluded/Not on Topic
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