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Design and Synthesis of Vanadium Pentoxide/Polypyrrole Hybrid Electrochemical Materials

Published online by Cambridge University Press:  10 February 2011

J.H. Harreld ,
B. Dunn ,
W. Cheng ,
F. Leroux  and
L.F. Nazar
J.H. Harreld
Affiliation:
Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095-1595
B. Dunn
Affiliation:
Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095-1595
W. Cheng
Affiliation:
Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095-1595
F. Leroux
Affiliation:
Department of Chemistry, University of Waterloo Waterloo, Ontario, Canada
L.F. Nazar
Affiliation:
Department of Chemistry, University of Waterloo Waterloo, Ontario, Canada
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Abstract

Vanadium oxide/polypyrrole hybrid gels were synthesized by two different strategies. These approaches were focused on either the sequential or consecutive polymerization of the inorganic and organic networks. Both techniques led to monolithic hybrid aerogels. Aerogels synthesized by the consecutive network formation method (“cosynthesis”) with compositions of approximately [PPy]0.8V205intercalated nearly twice as much Li per V2O5(2·8·3·0 Li/V205) as non-hybridized V20, aerogel (1·5 Li/V205). When suitable oxidation and polymerization treatments were applied to the materials, their specific capacity remained reasonably high (180−190 mAh/g compared to 220 mAh/g exhibited by V205, aerogel).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 519: Symposium O – Organic/Inorganic Hybrid Materials , 1998 , 191
Copyright
Copyright © Materials Research Society 1998

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