Li-alloy/transition-metal sulfide cells designed for overcharge tolerance
To explore the capability of the controlled self-discharge process for chemical overcharge protection, several LiAlSi/LiF-LiCl-LiBr- MgO/FeS and LiAlSi/LiCl-LiBr-KBr-MgO/FeS cells were built and tested. The electrode material formulas do not indicate real compounds; they merely represent electrode compositions that are normalized to one mole of the negative matrix material (Al and Si), thereby fixing the atom ratios of Al:Si:Fe:S in the cell. Overcharge is a serious problem in batteries. Maintaining the charge voltage of each cell at or below the voltage limit and simultaneously reaching equal capacity in each series-connected cell of a lithium-alloy/metal sulfide battery over many cycles are difficult tasks. For lithium-alloy/monosulfide cells, a possible method of chemical overcharge protection is use of a controlled self-discharge process, as described in this article. 11 refs., 3 figs.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6518661
- Report Number(s):
- CONF-881061-14; ON: DE89007504
- Resource Relation:
- Conference: Electrochemical Society fall meeting, Chicago, IL, USA, 9 Oct 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALUMINIUM ALLOYS
OVERVOLTAGE
LITHIUM ALLOYS
CONTROL
SILICON ALLOYS
SULFIDES
BATTERY SEPARATORS
DISSOLUTION
ELECTRIC BATTERIES
ELECTRODES
REACTION KINETICS
ALLOYS
CHALCOGENIDES
ELECTROCHEMICAL CELLS
KINETICS
SULFUR COMPOUNDS
250901* - Energy Storage- Batteries- Design & Development
250903 - Energy Storage- Batteries- Materials
Components
& Auxiliaries