Sol - Gel synthesis of vanadium oxide within a block copolymer matrix

Elsa A. Olivetti, Jong Hak Kim, Donald R. Sadoway, Ayse Asatekin, Anne M. Mayes

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Films consisting of a vanadium pentoxide (i.e., V 2O 5) phase formed within a rubbery block copolymer were developed for their potential use as nanocomposite cathodes in lithium rechargeable batteries. Nanocomposite films were prepared by sol - gel synthesis from vanadyl triisopropoxide precursor in poly(oligooxyethylene methacrylate)-block- poly(butyl methacrylate), POEM-b-PBMA. The in situ growth of amorphous V 2O 5 was confirmed by wide-angle X-ray scattering (WAXS), X-ray photoelectron spectroscopy (XPS), and small-angle X-ray scattering (SAXS). Scanning transmission electron microscopy (STEM) and differential scanning calorimetry (DSC) demonstrated the selective incorporation of vanadium oxide within the ion-conducting POEM domains, while the oxide morphology was revealed by TEM to be a filamentous network. Cyclic voltammetry and impedance spectroscopy confirmed the preservation of the redox properties of the vanadium oxide and the ion-conductive properties of the polymer in hybrid films. Co-assembled nanocomposite films incorporating up to 34 wt % (13 vol %) vanadium oxide were flexible and semi-transparent.

Original languageEnglish
Pages (from-to)2828-2833
Number of pages6
JournalChemistry of Materials
Issue number12
Publication statusPublished - 2006 Jun 13

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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    Olivetti, E. A., Kim, J. H., Sadoway, D. R., Asatekin, A., & Mayes, A. M. (2006). Sol - Gel synthesis of vanadium oxide within a block copolymer matrix. Chemistry of Materials, 18(12), 2828-2833.