Polymer electrolytes from plasticized polyMOBs and their gel forms

Wu Xu, Charles Angell

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Plasticized and crosslinked versions of poly(lithium oligoetherato mono-oxalato borate), called lithium polyMOBs, have been studied. In heavily plasticized forms of both polyMOB, and a LiBH4-crosslinked polyMOB, the ionic conductivity reaches 10-3 S cm-1 at room temperature while single ion conductivity is automatically retained. The electrochemical stability window is up to 5 V, for both stainless steel (SS) electrodes. The plasticized forms are fluid, not a gel, due to the low molecular weight of the polyanions. Freestanding gel electrolytes with high single ionic conductivity of 10-4 S cm-1 at ambient can be obtained by incorporation of high molecular weight poly(methyl methacrylate) (PMMA) into the solution. Electrochemical cells using these electrolytes will not suffer from concentration polarization.

Original languageEnglish (US)
Pages (from-to)2029-2035
Number of pages7
JournalElectrochimica Acta
Issue number14-16 SPEC.
StatePublished - Jun 30 2003


  • Gel electrolytes
  • PolyMOBs
  • Polyanionic electrolytes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry


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