Phenyl phosphonic acid functionalized poly[aryloxyphosphazenes] as proton-conducting membranes for direct methanol fuel cells

Harry R. Allcock; Michael A. Hofmann; Catherine M. Ambler; Serguei N. Lvov; Xiangyang Y. Zhou; Elena Chalkova; Jamie Weston

doi:10.1016/S0376-7388(01)00702-5

Phenyl phosphonic acid functionalized poly[aryloxyphosphazenes] as proton-conducting membranes for direct methanol fuel cells

Harry R. Allcock, Michael A. Hofmann, Catherine M. Ambler, Serguei N. Lvov, Xiangyang Y. Zhou, Elena Chalkova, Jamie Weston

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

158 Scopus citations

Abstract

A method for the synthesis of phenyl phosphonic acid functionalized poly[aryloxyphosphazene] membranes is described. Membranes of polymers with total ion-exchange capacities between 1.17 and 1.43meq.g^-1 were cast from N,N-dimethyl-formamide and found to have proton conductivities between 10^-2 and 10^-1Scm^-1. Equilibrium water swelling values were determined to be between 11 and 32% depending on the polymer structure. Methanol diffusion coefficients for both radiation cross-linked and non-cross-linked membranes in 3M aqueous methanol at 80°C and 2.8bar were found to be at least 12 times lower than for Nafion 117, and 6 times lower than for a radiation cross-linked sulfonated polyphosphazene membrane.

Original language	English (US)
Pages (from-to)	47-54
Number of pages	8
Journal	Journal of Membrane Science
Volume	201
Issue number	1-2
DOIs	https://doi.org/10.1016/S0376-7388(01)00702-5
State	Published - May 31 2002

All Science Journal Classification (ASJC) codes

Biochemistry
General Materials Science
Physical and Theoretical Chemistry
Filtration and Separation

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10.1016/S0376-7388(01)00702-5

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title = "Phenyl phosphonic acid functionalized poly[aryloxyphosphazenes] as proton-conducting membranes for direct methanol fuel cells",

abstract = "A method for the synthesis of phenyl phosphonic acid functionalized poly[aryloxyphosphazene] membranes is described. Membranes of polymers with total ion-exchange capacities between 1.17 and 1.43meq.g-1 were cast from N,N-dimethyl-formamide and found to have proton conductivities between 10-2 and 10-1Scm-1. Equilibrium water swelling values were determined to be between 11 and 32% depending on the polymer structure. Methanol diffusion coefficients for both radiation cross-linked and non-cross-linked membranes in 3M aqueous methanol at 80°C and 2.8bar were found to be at least 12 times lower than for Nafion 117, and 6 times lower than for a radiation cross-linked sulfonated polyphosphazene membrane.",

author = "Allcock, {Harry R.} and Hofmann, {Michael A.} and Ambler, {Catherine M.} and Lvov, {Serguei N.} and Zhou, {Xiangyang Y.} and Elena Chalkova and Jamie Weston",

note = "Funding Information: This work was funded by the United States Department of Energy CARAT Project no. DE-PS02-98EE504493 (Phase I).",

year = "2002",

month = may,

day = "31",

doi = "10.1016/S0376-7388(01)00702-5",

language = "English (US)",

volume = "201",

pages = "47--54",

journal = "Journal of Membrane Science",

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TY - JOUR

T1 - Phenyl phosphonic acid functionalized poly[aryloxyphosphazenes] as proton-conducting membranes for direct methanol fuel cells

AU - Allcock, Harry R.

AU - Hofmann, Michael A.

AU - Ambler, Catherine M.

AU - Lvov, Serguei N.

AU - Zhou, Xiangyang Y.

AU - Chalkova, Elena

AU - Weston, Jamie

N1 - Funding Information: This work was funded by the United States Department of Energy CARAT Project no. DE-PS02-98EE504493 (Phase I).

PY - 2002/5/31

Y1 - 2002/5/31

N2 - A method for the synthesis of phenyl phosphonic acid functionalized poly[aryloxyphosphazene] membranes is described. Membranes of polymers with total ion-exchange capacities between 1.17 and 1.43meq.g-1 were cast from N,N-dimethyl-formamide and found to have proton conductivities between 10-2 and 10-1Scm-1. Equilibrium water swelling values were determined to be between 11 and 32% depending on the polymer structure. Methanol diffusion coefficients for both radiation cross-linked and non-cross-linked membranes in 3M aqueous methanol at 80°C and 2.8bar were found to be at least 12 times lower than for Nafion 117, and 6 times lower than for a radiation cross-linked sulfonated polyphosphazene membrane.

AB - A method for the synthesis of phenyl phosphonic acid functionalized poly[aryloxyphosphazene] membranes is described. Membranes of polymers with total ion-exchange capacities between 1.17 and 1.43meq.g-1 were cast from N,N-dimethyl-formamide and found to have proton conductivities between 10-2 and 10-1Scm-1. Equilibrium water swelling values were determined to be between 11 and 32% depending on the polymer structure. Methanol diffusion coefficients for both radiation cross-linked and non-cross-linked membranes in 3M aqueous methanol at 80°C and 2.8bar were found to be at least 12 times lower than for Nafion 117, and 6 times lower than for a radiation cross-linked sulfonated polyphosphazene membrane.

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U2 - 10.1016/S0376-7388(01)00702-5

DO - 10.1016/S0376-7388(01)00702-5

M3 - Article

AN - SCOPUS:0037204641

SN - 0376-7388

VL - 201

SP - 47

EP - 54

JO - Journal of Membrane Science

JF - Journal of Membrane Science

IS - 1-2

ER -

Phenyl phosphonic acid functionalized poly[aryloxyphosphazenes] as proton-conducting membranes for direct methanol fuel cells

Abstract

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