Accession Number : AD0757883

Title :   New Cathode Material for High Energy-Density Batteries,

Corporate Author : ATOMICS INTERNATIONAL CANOGA PARK CALIF

Personal Author(s) : Nicholson,Margie M.

Report Date : 30 JAN 1973

Pagination or Media Count : 31

Abstract : Semiconductive metal halides are under investigation as cathode materials for ambient-temperature lithium cells. N-type cadmium fluoride and zinc fluoride were further characterized as electrodes limited by cathodic passivation in a lithium perchlorate-propylene carbonate electrolyte. The discharge of cadmium fluoride occurred without passivation, however, in a tetramethylammonium hexafluorophosphate solution in the same solvent. The result confirms previous evidence that an alkali metal fluoride film was the cause of passivation in the cade of cadmium fluoride and shows that the use of this material can be greatly increased by the elimination of alkali metal ions from the electrolyte. Zinc fluoride did not show a corresponding improvement. Performance estimates for porous cadmium fluoride cathodes indicate that the Li-CdF2(n-type) cell in TMA:PF6-PC may be superior to other organic-electrolyte systems where high power densities are required. (Author)

Descriptors :   (*STORAGE BATTERIES, CATHODES(ELECTROLYTIC CELL)), (*SEMICONDUCTORS, *CATHODES(ELECTROLYTIC CELL)), POROUS MATERIALS, FLUORIDES, ZINC COMPOUNDS, RELIABILITY(ELECTRONICS)

Subject Categories : Electrochemical Energy Storage

Distribution Statement : APPROVED FOR PUBLIC RELEASE