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Tetraarylborate polymer networks as single-ion conducting solid electrolytes

Author(s)
Aubrey, Michael L.; Alsbaiee, Alaaeddin; Ameloot, Rob; Coates, Geoffrey W.; Dichtel, William R.; Long, Jeffrey R.; Van Humbeck, Jeffrey Francis; ... Show more Show less
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Abstract
A new family of solid polymer electrolytes based upon anionic tetrakis(phenyl)borate tetrahedral nodes and linear bis-alkyne linkers is reported. Sonogashira polymerizations using tetrakis(4-iodophenyl)borate, tetrakis(4-iodo-2,3,5,6-tetrafluorophenyl)borate and tetrakis(4-bromo-2,3,5,6-tetrafluorophenyl)borate delivered highly cross-linked polymer networks with both 1,4-diethynylbeznene and a tri(ethylene glycol) substituted derivative. Promising initial conductivity metrics have been observed, including high room temperature conductivities (up to 2.7 × 10[superscript −4] S cm[superscript −1]), moderate activation energies (0.25–0.28 eV), and high lithium ion transport numbers (up to t[superscript Li+] = 0.93). Initial investigations into the effects of important materials parameters such as bulk morphology, porosity, fluorination, and other chemical modification, provide starting design parameters for further development of this new class of solid electrolytes.
Date issued
2015-06
URI
http://hdl.handle.net/1721.1/110602
Department
Massachusetts Institute of Technology. Department of Chemistry
Journal
Chemical Science
Publisher
Royal Society of Chemistry
Citation
Van Humbeck, Jeffrey F. et al. “Tetraarylborate Polymer Networks as Single-Ion Conducting Solid Electrolytes.” Chem. Sci. 6.10 (2015): 5499–5505. © 2015 The Royal Society of Chemistry
Version: Final published version
ISSN
2041-6520
2041-6539

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