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

78 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

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Keywords

Diffusion coefficients
Methanol crossover
Polymer electrolyte fuel cells
Polyphosphazene electrolyte membranes

ASJC Scopus subject areas

Materials Science(all)

Cite this

Fedkin, M. V., Zhou, X., Hofmann, M. A., Chalkova, E., Weston, J. A., Allcock, H. R., & Lvov, S. N. (2002). Evaluation of methanol crossover in proton-conducting polyphosphazene membranes. Materials Letters, 52(3), 192-196. https://doi.org/10.1016/S0167-577X(01)00391-3

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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.",

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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.

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