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Ac Impedance Spectroscopy Study of Modified Proton-Exchange Membrane Nanocomposites

Published online by Cambridge University Press:  01 February 2011

Françoise Damay  and
Lisa C. Klein
Françoise Damay
Affiliation:
Department of Ceramic and Materials Engineering, Rutgers, The State University of New Jersey, 607 Taylor Road, Piscataway, NJ 08854-8065, U.S.A.
Lisa C. Klein
Affiliation:
Department of Ceramic and Materials Engineering, Rutgers, The State University of New Jersey, 607 Taylor Road, Piscataway, NJ 08854-8065, U.S.A.
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Abstract

The dielectric and electrical behaviors of a NafionTM membrane, a NafionTM/7SiO2-2P2O5-ZrO2 gel composite, and a NafionTM/ZrP particle composite were investigated using ac impedance spectroscopy at different relative humidities and temperatures. Only NafionTM/7SiO2-2P2O5-ZrO2 showed a slightly higher conductivity than NafionTM at high temperature. For NafionTM/ZrP, proton mobility was significantly lower, particularly at high relative humidity. The results suggest that improvement in fuel cell performance, previously measured on composite membranes, does not merely result from increased hydrophilic properties.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 733: Symposium T – Polymer Nanocomposites , 2002 , T1.2
Copyright
Copyright © Materials Research Society 2002

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