Water uptake of perfluorosulfonic acid membranes from liquid water and water vapor

The water uptake of several perfluorosulfonic acid membranes from liquid water over the temperature range 25 to 130 C and from water vapor at 80 C was determined. For water uptake from liquid water, the water uptake depended on the immersion temperature, the ion exchange capacity of the membrane, an...

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Bibliographic Details
Published inJournal of the Electrochemical Society Vol. 141; no. 6; pp. 1493 - 1498
Main Authors HINATSU, J. T, MIZUHATA, M, TAKENAKA, H
Format Journal Article
LanguageEnglish
Published Pennington, NJ Electrochemical Society 01.06.1994
Subjects
30 DIRECT ENERGY CONVERSION
300502 - Fuel Cells- Performance & Testing
Chemistry
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELECTROLYTES
Exact sciences and technology
FLUORINE COMPOUNDS
FUEL CELLS
General and physical chemistry
HALOGEN COMPOUNDS
HYDRATION
HYDROFLUORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
Ion-exchange
MEMBRANES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
Other ion exchangers: preparations and properties
SOLID ELECTROLYTE FUEL CELLS
SOLID ELECTROLYTES
SOLVATION
SULFONIC ACIDS
SUPPORTED LIQUID MEMBRANES
Surface physical chemistry
WATER INFLUX
Water
Thickness
Liquid state
Sulfonate polymer
Ion exchange membrane
Gaseous state
Fluorine containing polymer
Temperature effect
Pretreatment
Experimental study
Uptake
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Summary:The water uptake of several perfluorosulfonic acid membranes from liquid water over the temperature range 25 to 130 C and from water vapor at 80 C was determined. For water uptake from liquid water, the water uptake depended on the immersion temperature, the ion exchange capacity of the membrane, and the pretreatment of the membrane. The effects of pretreatment were not significant at immersion temperatures higher than 100 to 110 C. For water uptake from water vapor at 80 C, the sorption isotherms were similar in shape of those reported by previous investigators for 18.5 to 30 C, although the water uptake at 80 C was less than that reported for the lower temperatures. The water uptake from water vapor of some membranes that have been found to give relatively good performance when used in polymer electrolyte fuel cells was higher then that observed with, e.g., Nafion[reg sign] 117.
ISSN:0013-4651
1945-7111
DOI:10.1149/1.2054951