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Fuel Cell Membranes Based on Polymer-Modified Silica Colloidal Crystals and Glasses: Proton Conductivity and Fuel Cell Performance

Published online by Cambridge University Press:  02 May 2013

Amir Khabibullin  and
Ilya Zharov
Amir Khabibullin
Affiliation:
Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA
Ilya Zharov
Affiliation:
Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA
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Abstract

We describe a hybrid organic-inorganic fuel cell membrane material based on silica colloidal crystal and using EEMA/SPM co-polymers. We demonstrate that there is an S-shaped dependence of proton conductivity on the amount of sulfonyl groups in the copolymer for the copolymer-modified membranes and that there is no significant increase in proton conductivity with increasing amount of sulfonated monomer content above 60%. The studies of fuel cell potential dependence on the degree of sulfonation show that the presence of non-ionic moieties improves the performance of fuel cell, likely due to the reduction of methanol cross-over through the membrane. The fuel cells using the polymer-modified silica colloidal membranes perform better than Nafion 117.

Keywords

colloidpolymerionic conductor
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1502: Symposium T – Membrane Material Platforms and Concepts for Energy, Environment and Medical Applications , 2013 , mrsf12-1502-t10-01
Copyright
Copyright © Materials Research Society 2013

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References

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