Separators for lithium alloy--iron sulfide fused salt batteries. First annual report

Technical Report · Tue Mar 16 04:00:00 EST 1976

OSTI ID:7355592

Walker, Jr, R D

In an effort to overcome certain limitations of separators woven from boron nitride roving and to provide alternative separator formulations, an investigation of paper-like separators made from materials which are stable in the battery environment was undertaken. The principal areas of research to date involved materials, fiber dispersion, sheet formation and processing, and separator evaluation. Separators made from mixtures of fibers, sometimes including powders, proved to have excellent properties, provided at least small amounts of asbestos are incorporated in the mixture. Separators without asbestos proved to to be too fragile to be of serious interest; and; although the strength of these separators can be improved by the addition of inorganic binders; these introduce undesirable problems, Mixtures of asbestos with boron nitride, yttria, or lithium aluminate fibers yielded separator sheets with excellent physical and mechanical properties. A separator containing 10 wt percent asbestos and 90 wt percent yttria fibers has already run more than 500 hours in an experimental cell, and the performance is still excellent. Methods of fiber dispersion, sheet formation and processing and of separator evaluation are described, and typical results are reported. 6 tables.

• Research Organization: Florida Univ., Gainesville (USA). Engineering and Industrial Experiment Station
• DOE Contract Number: EY-76-S-05-4874
• OSTI ID: 7355592
• Report Number(s): ORO-4874-2
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
ALUMINATES
ALUMINIUM COMPOUNDS
ASBESTOS
BATTERY SEPARATORS
BORON COMPOUNDS
BORON NITRIDES
CHALCOGENIDES
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ENERGY STORAGE SYSTEMS
FABRICATION
FIBERS
IRON COMPOUNDS
IRON SULFIDES
LITHIUM ALLOYS
LITHIUM COMPOUNDS
LITHIUM-SULFUR BATTERIES
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MATERIALS
METAL-NONMETAL BATTERIES
NITRIDES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PHYSICAL PROPERTIES
PNICTIDES
POWDERS
RESEARCH PROGRAMS
SULFIDES
SULFUR COMPOUNDS
TESTING
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES