Anion-trapping and polyanion electrolytes based on acid-in-chain borate polymers

Wu Xu, Xiao Guang Sun, Charles Angell

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

Oligoether branched-and-spaced "acid-in-chain" polymers, with variable length side chains attached to the acidic borons have been prepared by a simple two-step reaction sequence. These may be used as anion-retarding hosts for "salt-in-polymer" electrolytes or, alternatively, may be converted to polyanionic electrolytes by reacting with strong Lewis base anions. High ionic conductivities, reaching 7.6×10-5 S cm-1 at 25°C have been obtained for the former case, using LiTFSI:B proportions of 1:1, and optimized side chain and spacer lengths. The electrochemical windows are wide enough (>4.5 V) for most applications.

Original languageEnglish (US)
Pages (from-to)2255-2266
Number of pages12
JournalElectrochimica Acta
Volume48
Issue number14-16 SPEC.
DOIs
StatePublished - Jun 30 2003

Keywords

  • Acid-in-chain
  • Anion-trapping
  • Borate polymers

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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