Evaluation of methanol crossover in proton-conducting polyphosphazene membranes

Mark V. Fedkin; Xiangyang Zhou; Michael A. Hofmann; Elena Chalkova; Jamie A. Weston; Harry R. Allcock; Serguei N. Lvov

doi:10.1016/S0167-577X(01)00391-3

Evaluation of methanol crossover in proton-conducting polyphosphazene membranes

Mark V. Fedkin, Xiangyang Zhou, Michael A. Hofmann, Elena Chalkova, Jamie A. Weston, Harry R. Allcock, Serguei N. Lvov

Research output: Contribution to journal › Article › peer-review

80 Scopus citations

Abstract

Methanol crossover in proton-conducting polyphosphazene membranes was investigated using polymer electrolyte fuel cells. The transport of methanol through a membrane from the lower chamber of the cell to the upper chamber was conducted by molecular diffusion through the polymer structure. It is found that the methanol diffusion coefficients of phenyl phosphonic acid functionalized poly[aryloxyphosphazene] membranes in an aqueous methanol solution were 40 times lower than that of Nafion and 10-20 times lower with respect to sulfonated polyphosphazene membranes.

Original language	English (US)
Pages (from-to)	192-196
Number of pages	5
Journal	Materials Letters
Volume	52
Issue number	3
DOIs	https://doi.org/10.1016/S0167-577X(01)00391-3
State	Published - Jan 2002
Externally published	Yes

Keywords

Diffusion coefficients
Methanol crossover
Polymer electrolyte fuel cells
Polyphosphazene electrolyte membranes

ASJC Scopus subject areas

Materials Science(all)

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10.1016/S0167-577X(01)00391-3

Cite this

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title = "Evaluation of methanol crossover in proton-conducting polyphosphazene membranes",

abstract = "Methanol crossover in proton-conducting polyphosphazene membranes was investigated using polymer electrolyte fuel cells. The transport of methanol through a membrane from the lower chamber of the cell to the upper chamber was conducted by molecular diffusion through the polymer structure. It is found that the methanol diffusion coefficients of phenyl phosphonic acid functionalized poly[aryloxyphosphazene] membranes in an aqueous methanol solution were 40 times lower than that of Nafion and 10-20 times lower with respect to sulfonated polyphosphazene membranes.",

keywords = "Diffusion coefficients, Methanol crossover, Polymer electrolyte fuel cells, Polyphosphazene electrolyte membranes",

author = "Fedkin, {Mark V.} and Xiangyang Zhou and Hofmann, {Michael A.} and Elena Chalkova and Weston, {Jamie A.} and Allcock, {Harry R.} and Lvov, {Serguei N.}",

note = "Funding Information: The authors acknowledge the support of this work by the US Department of Energy (Contract no. DE-PS02-98EE504493, CARAT Program). The authors thank D.D. Macdonald for helpful discussions during the course of this study.",

year = "2002",

month = jan,

doi = "10.1016/S0167-577X(01)00391-3",

language = "English (US)",

volume = "52",

pages = "192--196",

journal = "Materials Letters",

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number = "3",

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TY - JOUR

T1 - Evaluation of methanol crossover in proton-conducting polyphosphazene membranes

AU - Fedkin, Mark V.

AU - Zhou, Xiangyang

AU - Hofmann, Michael A.

AU - Chalkova, Elena

AU - Weston, Jamie A.

AU - Allcock, Harry R.

AU - Lvov, Serguei N.

N1 - Funding Information: The authors acknowledge the support of this work by the US Department of Energy (Contract no. DE-PS02-98EE504493, CARAT Program). The authors thank D.D. Macdonald for helpful discussions during the course of this study.

PY - 2002/1

Y1 - 2002/1

N2 - Methanol crossover in proton-conducting polyphosphazene membranes was investigated using polymer electrolyte fuel cells. The transport of methanol through a membrane from the lower chamber of the cell to the upper chamber was conducted by molecular diffusion through the polymer structure. It is found that the methanol diffusion coefficients of phenyl phosphonic acid functionalized poly[aryloxyphosphazene] membranes in an aqueous methanol solution were 40 times lower than that of Nafion and 10-20 times lower with respect to sulfonated polyphosphazene membranes.

AB - Methanol crossover in proton-conducting polyphosphazene membranes was investigated using polymer electrolyte fuel cells. The transport of methanol through a membrane from the lower chamber of the cell to the upper chamber was conducted by molecular diffusion through the polymer structure. It is found that the methanol diffusion coefficients of phenyl phosphonic acid functionalized poly[aryloxyphosphazene] membranes in an aqueous methanol solution were 40 times lower than that of Nafion and 10-20 times lower with respect to sulfonated polyphosphazene membranes.

KW - Diffusion coefficients

KW - Methanol crossover

KW - Polymer electrolyte fuel cells

KW - Polyphosphazene electrolyte membranes

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U2 - 10.1016/S0167-577X(01)00391-3

DO - 10.1016/S0167-577X(01)00391-3

M3 - Article

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VL - 52

SP - 192

EP - 196

JO - Materials Letters

JF - Materials Letters

SN - 0167-577X

IS - 3

ER -

Evaluation of methanol crossover in proton-conducting polyphosphazene membranes

Abstract

Keywords

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