Journal
MATERIALS LETTERS
Volume 52, Issue 3, Pages 192-196Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0167-577X(01)00391-3
Keywords
methanol crossover; diffusion coefficients; polyphosphazene electrolyte membranes; polymer electrolyte fuel cells
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A diffusion cell was developed to evaluate the methanol crossover for a novel class of polyphosphazene electrolyte membranes. It was found that the methanol diffusion coefficients of phenyl phosphonic acid functionalized poly[aryloxyphosphazene] membranes in an aqueous methanol solution (50% v/v) were similar to40 times lower than for Nafion 117, and similar to10-20 times lower than for sulfonated polyphosphazene membranes. (C) 2002 Elsevier Science B,V. All rights reserved.
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