Gas permeation properties of solid polymer electrolyte (SPE) membranes

Gas permeation properties for Nafion membranes and their composites were investigated under various conditions. The permeability coefficients of Nafion depended greatly on the water content, the cation form, and the ion-exchange capacity. The gas permeation rate through a same sample varied with tem...

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Bibliographic Details
Published in:Journal of the Electrochemical Society 1985-06, Vol.132 (6), p.1328-1332
Main Authors: SAKAI, T, TAKENADA, H, WAKABAYASHI, N, KAWAMI, Y, TORIKAI, E
Format: Article
Language:English
Subjects:
Chemistry
Electrochemistry
Exact sciences and technology
General and physical chemistry
Miscellaneous (electroosmosis, electrophoresis, electrochromism, electrocrystallization, ...)
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Summary:Gas permeation properties for Nafion membranes and their composites were investigated under various conditions. The permeability coefficients of Nafion depended greatly on the water content, the cation form, and the ion-exchange capacity. The gas permeation rate through a same sample varied with temperature, pressure, and membrane thickness. The permeability of hydrogen was about twice as great as that of oxygen. The electrocatalyst plated on the membrane did not serve as a barrier for gas permeation, but the structure of the catalyst layer played an important role in gas permeation during water electrolysis.
ISSN:0013-4651
1945-7111
DOI:10.1149/1.2114111