A comparative study of water uptake by and transport through ionomeric fuel cell membranes
- Los Alamos National Lab., NM (United States). Electronics Materials and Device Research
Water uptake and transport parameters measured at 30 C for several available perfluorosulfonic acid membranes are compared. The water sorption characteristics, diffusion coefficient of water, electroosmotic drag, and protonic conductivity were determined for Nafion 117, Membrane C, and Dow XUS 13204.10 developmental fuel cell membrane. The diffusion coefficient and conductivity of each of these membranes were determined as functions of membrane water content. Experimental determination of transport parameters, enables one to compare membranes without the skewing effects of extensive features such as membrane thickness which contributes in a nonlinear fashion to performance in polymer electrolyte fuel cells.
- OSTI ID:
- 6261051
- Journal Information:
- Journal of the Electrochemical Society; (United States), Vol. 140:7; ISSN 0013-4651
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
MEMBRANES
PERMEABILITY
SOLID ELECTROLYTE FUEL CELLS
SOLID ELECTROLYTES
DIFFUSION
IONIC CONDUCTIVITY
MEMBRANE TRANSPORT
OSMOSIS
POLYMERS
SORPTION
SULFONIC ACIDS
WATER
DIRECT ENERGY CONVERTERS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTROLYTES
FUEL CELLS
HYDROGEN COMPOUNDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
300503* - Fuel Cells- Materials
Components
& Auxiliaries