Transport properties of Nafion™ composite membranes for proton-exchange membranes fuel cells

F. Damay; L. C. Klein

doi:10.1016/S0167-2738(03)00238-8

Transport properties of Nafion™ composite membranes for proton-exchange membranes fuel cells

F. Damay, L. C. Klein

School of Engineering, Materials Science & Engineering

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

135 Scopus citations

Abstract

The dielectric and electrical behaviors of a Nafion™ membrane, Nafion™/7SiO₂-2P₂O₅-ZrO₂ (SPZ), Nafion™/SiO₂+H₃PO₄ (iHPO), Nafion™/SiO₂+H₃PW₁₂O₄₀ (iHPW) and Nafion™/ZrP composites were investigated using water desorption measurements and ac impedance spectroscopy as a function of time, relative humidity and temperature. The composite membranes except Nafion™/ZrP exhibited only marginally higher conductivity than Nafion™ at high temperature. Unlike the other membranes, the Nafion™/ZrP membrane showed reduced proton mobility with a higher activation energy. The results suggest that improvements in fuel cell performance, previously observed in Nafion™/SPZ and Nafion™/ZrP composite membranes, are not due simply to increased hydrophilic properties, but that there is an interplay between structure and proton mobility.

Original language	English (US)
Pages (from-to)	261-267
Number of pages	7
Journal	Solid State Ionics
Volume	162-163
DOIs	https://doi.org/10.1016/S0167-2738(03)00238-8
State	Published - Sep 2003
Event	11th Cpnference on Solid (SSPC11) - Guildford, United Kingdom Duration: Aug 27 2002 → Aug 30 2002

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

Keywords

Impedance spectroscopy
Organic/inorganic nanocomposites
Proton conducting membranes
Sol-gel process

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10.1016/S0167-2738(03)00238-8

Cite this

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title = "Transport properties of Nafion{\texttrademark} composite membranes for proton-exchange membranes fuel cells",

abstract = "The dielectric and electrical behaviors of a Nafion{\texttrademark} membrane, Nafion{\texttrademark}/7SiO2-2P2O5-ZrO2 (SPZ), Nafion{\texttrademark}/SiO2+H3PO4 (iHPO), Nafion{\texttrademark}/SiO2+H3PW12O40 (iHPW) and Nafion{\texttrademark}/ZrP composites were investigated using water desorption measurements and ac impedance spectroscopy as a function of time, relative humidity and temperature. The composite membranes except Nafion{\texttrademark}/ZrP exhibited only marginally higher conductivity than Nafion{\texttrademark} at high temperature. Unlike the other membranes, the Nafion{\texttrademark}/ZrP membrane showed reduced proton mobility with a higher activation energy. The results suggest that improvements in fuel cell performance, previously observed in Nafion{\texttrademark}/SPZ and Nafion{\texttrademark}/ZrP composite membranes, are not due simply to increased hydrophilic properties, but that there is an interplay between structure and proton mobility.",

keywords = "Impedance spectroscopy, Organic/inorganic nanocomposites, Proton conducting membranes, Sol-gel process",

author = "F. Damay and Klein, {L. C.}",

year = "2003",

month = sep,

doi = "10.1016/S0167-2738(03)00238-8",

language = "English (US)",

volume = "162-163",

pages = "261--267",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier",

note = "11th Cpnference on Solid (SSPC11) ; Conference date: 27-08-2002 Through 30-08-2002",

}

TY - JOUR

T1 - Transport properties of Nafion™ composite membranes for proton-exchange membranes fuel cells

AU - Damay, F.

AU - Klein, L. C.

PY - 2003/9

Y1 - 2003/9

N2 - The dielectric and electrical behaviors of a Nafion™ membrane, Nafion™/7SiO2-2P2O5-ZrO2 (SPZ), Nafion™/SiO2+H3PO4 (iHPO), Nafion™/SiO2+H3PW12O40 (iHPW) and Nafion™/ZrP composites were investigated using water desorption measurements and ac impedance spectroscopy as a function of time, relative humidity and temperature. The composite membranes except Nafion™/ZrP exhibited only marginally higher conductivity than Nafion™ at high temperature. Unlike the other membranes, the Nafion™/ZrP membrane showed reduced proton mobility with a higher activation energy. The results suggest that improvements in fuel cell performance, previously observed in Nafion™/SPZ and Nafion™/ZrP composite membranes, are not due simply to increased hydrophilic properties, but that there is an interplay between structure and proton mobility.

AB - The dielectric and electrical behaviors of a Nafion™ membrane, Nafion™/7SiO2-2P2O5-ZrO2 (SPZ), Nafion™/SiO2+H3PO4 (iHPO), Nafion™/SiO2+H3PW12O40 (iHPW) and Nafion™/ZrP composites were investigated using water desorption measurements and ac impedance spectroscopy as a function of time, relative humidity and temperature. The composite membranes except Nafion™/ZrP exhibited only marginally higher conductivity than Nafion™ at high temperature. Unlike the other membranes, the Nafion™/ZrP membrane showed reduced proton mobility with a higher activation energy. The results suggest that improvements in fuel cell performance, previously observed in Nafion™/SPZ and Nafion™/ZrP composite membranes, are not due simply to increased hydrophilic properties, but that there is an interplay between structure and proton mobility.

KW - Impedance spectroscopy

KW - Organic/inorganic nanocomposites

KW - Proton conducting membranes

KW - Sol-gel process

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U2 - 10.1016/S0167-2738(03)00238-8

DO - 10.1016/S0167-2738(03)00238-8

M3 - Conference article

AN - SCOPUS:0141595240

SN - 0167-2738

VL - 162-163

SP - 261

EP - 267

JO - Solid State Ionics

JF - Solid State Ionics

T2 - 11th Cpnference on Solid (SSPC11)

Y2 - 27 August 2002 through 30 August 2002

ER -

Transport properties of Nafion™ composite membranes for proton-exchange membranes fuel cells

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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