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Organic-Inorganic Hybrid Protonic Polymeric Electrolytes Grafted by Sulfonic Acid / Sulfonamide Moieties

Published online by Cambridge University Press:  10 February 2011

Laurent Depre ,
Christiane Poinsignon  and
Michael Popall
Laurent Depre
Affiliation:
LEPMI-ENSEEG BP75 F-38402 St Martin d'H~res Cedex. France
Christiane Poinsignon
Affiliation:
LEPMI-ENSEEG BP75 F-38402 St Martin d'H~res Cedex. France
Michael Popall
Affiliation:
Fraunhofer Institut fur Silicatforschung, Neunerplatz 2, D-97082 Wurzburg. Germany
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Abstract

Thin proton conducting membranes of an organic-inorganic polymer electrolyte bearing sulphonamide and sulfonic groups are prepared by sol-gel process. Polycondensation of alkoxysilanes provides the inorganic silicate backbone whereas the organic network is formed from reactive functional groups R'((-CH2)3-SO3H) and [(-CH2)3-SO2 NH2] of alkoxysilanes of R'Si[OR3] type. Proton conductivity measured in the dry and wet state under controlled Temperature and Relative Humidity increases from 10 -4 S.cm-1 under vacuum to 6 10-2S.cm-1 at 70°C and 96% RH. Conductivity dependence on temperature and associated conduction mechanisms are discussed in both states.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 575: Symposium CC – New Materials for Batteries & Fuel Cells , 1999 , 253
Copyright
Copyright © Materials Research Society 2000

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References

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