Organic electrolyte permselective membranes. Report No. 4 (final), 1 Apr 68--15 Sep 70. [Li--Cu halide cells]
Experiments were performed to assess the value of various commercial and specially-prepared membranes as separators in batteries containing electrolytes dissolved in propylene carbonate (PC). Specifically, these membranes should prevent self-discharge of lithium--copper halide cells. Since literature data suggest that self-discharge is caused by transport of anionic copper complexes to the lithium electrode, the separators selected were primarily cation-exchange membranes, which are known to exclude anions in aqueous solutions. Selective permeability for anions was tested by a variety of electrolyte diffusion, interdiffusion and transport number measurements. It was established that most commercial cation-exchange membranes have high resistances in PC, but three membranes with resistances less than 250 ohms sq cm in 0.50 M LiClO4/PC at 25 C were found, viz. C-322 (American Machine and Foundry Co., Stamford, Conn. - 117 ohm sq cm), UM-05 (Amicon Corp., Lexington, Mass. - 230 ohm sq cm) and 7930 Porous Glass (Corning Glass Works, Corning, N.Y. - 75 ohms sq cm). In order to combine the advantages of cation selectivity with low resistance, laminated membranes consisting of thin layers of phenolsulfonic acid--formaldehyde cation-exchange membranes on porous inert supports were prepared and tested. The data indicate that anion-barrier membranes of low resistance can be prepared by further developing this method. (auth)
- Research Organization:
- California Univ., Berkeley (USA). Sea Water Conversion Lab.
- DOE Contract Number:
- DAAB07-67-C-0590
- OSTI ID:
- 7113380
- Report Number(s):
- AD-882890
- Resource Relation:
- Other Information: See also AD--859386
- Country of Publication:
- United States
- Language:
- English
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LITHIUM-COPPER CHLORIDE BATTERIES
BATTERY SEPARATORS
METAL-NONMETAL BATTERIES
CARBONIC ACID ESTERS
CATIONS
CHLORATES
COPPER HALIDES
FORMALDEHYDE
ION EXCHANGE MATERIALS
LITHIUM
LITHIUM COMPOUNDS
MEMBRANES
SULFONIC ACIDS
ALDEHYDES
ALKALI METAL COMPOUNDS
ALKALI METALS
CHARGED PARTICLES
CHLORINE COMPOUNDS
COPPER COMPOUNDS
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELEMENTS
ENERGY STORAGE SYSTEMS
ESTERS
HALIDES
HALOGEN COMPOUNDS
IONS
METALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
250903* - Energy Storage- Batteries- Materials
Components
& Auxiliaries