Amphiphilic polymer electrolytes consisting of PVC-g-POEM comb-like copolymer and LiCF3SO3

Joo Hwan Koh, Kyung Ju Lee, Jin Ah Seo, Jong Hak Kim

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18 Citations (Scopus)

Abstract

An amphiphilic comb-like copolymer consisting of a poly(vinyl chloride) (PVC) backbone and poly((oxyethylene)9 methacrylate) (POEM) side chains, PVCgraft-POEM was synthesized via atom transfer radical polymerization. This comb copolymer was complexed with LiCF3SO3 to form a solid polymer electrolyte. FTIR and FT-Raman spectroscopy indicate that lithium salts are dissolved in the ion conducting POEM domains of microphase-separated graft copolymer up to 10 wt % of salt concentration. Microphase-separated structure of the materials and the selective interaction of lithium ions with POEM domains were revealed by transmission electron microscopy, wide angle X-ray scattering, and differential scanning calorimetry. The maximum ionic conductivity of 4.4 10.5 S/cm at room temperature was achieved at 10 wt % of salt concentration, above which salts are present as less mobile species such as ion pairs and higher order ionic aggregates, as characterized by FT-Raman spectroscopy.

Original languageEnglish
Pages (from-to)1443-1451
Number of pages9
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume47
Issue number15
DOIs
Publication statusPublished - 2009 Aug 1

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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