Ac impedance spectroscopy study of modified proton-exchange membrane nanocomposites

Françoise Damay; Lisa C. Klein

Ac impedance spectroscopy study of modified proton-exchange membrane nanocomposites

School of Engineering, Materials Science & Engineering

Research output: Contribution to journal › Conference article › peer-review

Abstract

The dielectric and electrical behaviors of a Nafion™ membrane, a Nafion™/7SiO₂-2P₂O₅-ZrO₂ gel composite, and a Nafion™/ZrP particle composite were investigated using ac impedance spectroscopy at different relative humidities and temperatures. Only Nafion™/7SiO₂-2P₂O₅-ZrO₂ showed a slightly higher conductivity than Nafion™ at high temperature. For Nafion™/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.

Original language	English (US)
Pages (from-to)	12-17
Number of pages	6
Journal	Materials Research Society Symposium Proceedings
Volume	733 E
State	Published - 2006
Event	2002 MRS Spring Meeting - San Francisco, CA, United States Duration: Apr 1 2002 → Apr 5 2002

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

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title = "Ac impedance spectroscopy study of modified proton-exchange membrane nanocomposites",

abstract = "The dielectric and electrical behaviors of a Nafion{\texttrademark} membrane, a Nafion{\texttrademark}/7SiO2-2P2O5-ZrO2 gel composite, and a Nafion{\texttrademark}/ZrP particle composite were investigated using ac impedance spectroscopy at different relative humidities and temperatures. Only Nafion{\texttrademark}/7SiO2-2P2O5-ZrO2 showed a slightly higher conductivity than Nafion{\texttrademark} at high temperature. For Nafion{\texttrademark}/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.",

author = "Fran{\c c}oise Damay and Klein, {Lisa C.}",

year = "2006",

language = "English (US)",

volume = "733 E",

pages = "12--17",

journal = "Materials Research Society Symposium - Proceedings",

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publisher = "Materials Research Society",

note = "2002 MRS Spring Meeting ; Conference date: 01-04-2002 Through 05-04-2002",

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TY - JOUR

T1 - Ac impedance spectroscopy study of modified proton-exchange membrane nanocomposites

AU - Damay, Françoise

AU - Klein, Lisa C.

PY - 2006

Y1 - 2006

N2 - The dielectric and electrical behaviors of a Nafion™ membrane, a Nafion™/7SiO2-2P2O5-ZrO2 gel composite, and a Nafion™/ZrP particle composite were investigated using ac impedance spectroscopy at different relative humidities and temperatures. Only Nafion™/7SiO2-2P2O5-ZrO2 showed a slightly higher conductivity than Nafion™ at high temperature. For Nafion™/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.

AB - The dielectric and electrical behaviors of a Nafion™ membrane, a Nafion™/7SiO2-2P2O5-ZrO2 gel composite, and a Nafion™/ZrP particle composite were investigated using ac impedance spectroscopy at different relative humidities and temperatures. Only Nafion™/7SiO2-2P2O5-ZrO2 showed a slightly higher conductivity than Nafion™ at high temperature. For Nafion™/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.

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UR - http://www.scopus.com/inward/citedby.url?scp=33845942941&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:33845942941

VL - 733 E

SP - 12

EP - 17

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

SN - 0272-9172

T2 - 2002 MRS Spring Meeting

Y2 - 1 April 2002 through 5 April 2002

ER -

Ac impedance spectroscopy study of modified proton-exchange membrane nanocomposites

Abstract

All Science Journal Classification (ASJC) codes

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