Tetraarylborate polymer networks as single-ion conducting solid electrolytes

Jeffrey F. Van Humbeck, Michael L. Aubrey, Alaaeddin Alsbaiee, Rob Ameloot, Geoffrey W. Coates, William R. Dichtel, Jeffrey R. Long*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

63 Scopus citations

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 × 10-4 S cm-1), moderate activation energies (0.25-0.28 eV), and high lithium ion transport numbers (up to tLi+ = 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.

Original languageEnglish (US)
Pages (from-to)5499-5505
Number of pages7
JournalChemical Science
Volume6
Issue number10
DOIs
StatePublished - Jun 23 2015

ASJC Scopus subject areas

  • Chemistry(all)

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