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Issue 10, 2015
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Tetraarylborate polymer networks as single-ion conducting solid electrolytes

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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 × 10−4 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.

Graphical abstract: Tetraarylborate polymer networks as single-ion conducting solid electrolytes

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Publication details

The article was received on 08 Jun 2015, accepted on 23 Jun 2015 and first published on 23 Jun 2015


Article type: Edge Article
DOI: 10.1039/C5SC02052B
Citation: Chem. Sci., 2015,6, 5499-5505
  • Open access: Creative Commons BY-NC license
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    Tetraarylborate polymer networks as single-ion conducting solid electrolytes

    J. F. Van Humbeck, M. L. Aubrey, A. Alsbaiee, R. Ameloot, G. W. Coates, W. R. Dichtel and J. R. Long, Chem. Sci., 2015, 6, 5499
    DOI: 10.1039/C5SC02052B

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