Synthesis, characterization, and transport properties of new mixed ionic-electronic conducting V{sub 2}O{sub 5}-polymer electrolyte xerogel nanocomposites
- Northwestern Univ., Evanston, IL (United States); and others
V{sub 2}O{sub 5} xerogels can be synthesized by hydrolyzing vanadyl alkoxides or self-condensation of vanadic acid. Sol-gel chemistry affords the possibility of making new V{sub 2}O{sub 5} composites with materials that cannot withstand the temperatures used in traditional synthesis of oxides (e.g., organic polymers). In this process mixing occurs at the molecular level, producing a nanocomposite. Nanocomposites are of special interest because they often exhibit properties that differ from those expected from the average of their individual components. Sol-gel chemistry also may provide free-standing thin films or spin-coating substrates. Smyrl and co-workers prepared spin-coated V{sub 2}O{sub 5} xerogels as cathode materials that reversibly intercalate more than 3 equiv of lithium. Kanatzidis and co-workers synthesized layered V{sub 2}O{sub 5} xerogel polymer composite bronzes with poly(pyrrole) and poly(thiophene) by the interaction of aqueous V{sub 2}O{sub 5} gels with the pyrrole or thiophene monomer. They also prepared composites with poly(ethylene oxide) and studied the materials structure, electronic properties, and redox reactions with lithium iodide. Ruiz-Hitzky and co-workers studied the structure and mixed protonic-electronic conductivity of the V{sub 2}O{sub 5}-crown ether composites they synthesized. In this work, the authors synthesized V{sub 2}O{sub 5}-polymer electrolyte mixed conducting xerogel nanocomposites and characterized their charge transport properties. 34 refs., 3 figs.
- DOE Contract Number:
- FG02-85ER45220
- OSTI ID:
- 459138
- Journal Information:
- Chemistry of Materials, Journal Name: Chemistry of Materials Journal Issue: 10 Vol. 8; ISSN 0897-4756; ISSN CMATEX
- Country of Publication:
- United States
- Language:
- English
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