Insoluble sulfide positive electrodes for organic electrolyte lithium secondary batteries
The behavior of CuS, NiS, SiS/sub 2/, MnS/sub 2/, and FeS as positive electrodes for rechargeable Li cells was investigated using a 1M LiAsF/sub 6//THF electrolyte. Of these sulfides CuS gave the best performance delivering 1.6 and 0.98 eq/mol of CuS at 1 mA/cm/sup 2/ after 4 and 20 cycles, respectively. These capacities translate into specific energies of 348 and 211 W-hr/lb based on the weight of CuS and actual cell voltages. It was found that both NiS and SiS/sub 2/ can be cycled for 40 cycles but the capacities were not adequate for battery applications. Deterioration of the Li electrode due to reaction of the Li with the electrolyte and reduction of the electrolyte on the CuS electrode below approximately 1.5V appear to be the main factors limiting the cycle life of the Li-CuS cell. 29 refs.
- Research Organization:
- EIC Corp, Newton, Mass, USA
- OSTI ID:
- 5192689
- Journal Information:
- J. Electrochem. Soc.; (United States), Vol. 128:12
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
LITHIUM-SULFUR BATTERIES
ELECTRODES
COPPER SULFIDES
IRON SULFIDES
MANGANESE SULFIDES
NICKEL SULFIDES
SILICON SULFIDES
CHALCOGENIDES
COPPER COMPOUNDS
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
IRON COMPOUNDS
MANGANESE COMPOUNDS
METAL-NONMETAL BATTERIES
NICKEL COMPOUNDS
SILICON COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
250903* - Energy Storage- Batteries- Materials
Components
& Auxiliaries