Structure-property relationships of anionic permselective membranes. [Fe/Cr redox storage batteries]
Anionic exchange membranes are used in Fe/Cr redox storage batteries to separate the anolyte from the catholyte and provide electrical continuity. Membranes with lower area resistivity, higher selectivity and reduced susceptibility toward fouling are required to improve the efficiency and lifetime of these batteries. In order to develop improved membrane, a better understanding of the relationships between these properties and such structural parameters as degree of crosslinking, ion exchange capacity and porosity were needed. The primary objective of this work was to define the structure-property relationships of anionic permselective membranes. A secondary goal was to develop empirical models which can be used to predict membrane performance. This kind of information should be useful for the development of improved membranes. To accomplish these goals a factorial study was carried out with model membranes. These membranes were designed in such a way that all three structural parameters could be varied independently. In this paper it will be shown how this approach not only provided models which could be used to predict membrane performance, but also how one of the model membrane exhibited better properties than state-of-the-art membranes.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6632784
- Report Number(s):
- SAND-82-2527C; CONF-830303-5; ON: DE83002244
- Resource Relation:
- Conference: 185. American Chemical Society national meeting, Seattle, WA, USA, 20 Mar 1983; Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ION EXCHANGE MATERIALS
PERFORMANCE
REDOX FUEL CELLS
ANIONS
CHROMIUM IONS
CROSS-LINKING
FOULING
IONIC CONDUCTIVITY
IRON IONS
MEMBRANES
MOLECULAR STRUCTURE
POLYMERS
POROSITY
CHARGED PARTICLES
CHEMICAL REACTIONS
DIRECT ENERGY CONVERTERS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
FUEL CELLS
IONS
MATERIALS
PHYSICAL PROPERTIES
POLYMERIZATION
REGENERATIVE FUEL CELLS
300503* - Fuel Cells- Materials
Components
& Auxiliaries