Chemical overcharge and overdischarge protection for Li-alloy/transition-metal sulfide cells

Journal Article · Sat Jul 01 04:00:00 EDT 1989 · Journal of the Electrochemical Society; (USA)

DOI:https://doi.org/10.1149/1.2097116· OSTI ID:6977973

Redey, L ^[1]

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1. Argonne National Lab., IL (USA). Chemical Technology Div.

Chemical overcharge protection by a polysulfide-shuttle mechanism has been proposed for lithium-alloy-disulfide cells; for example, disulfide is FeS{sub 2}, FeS{sub 2}-NiS{sub 2} or FeS{sub 2}-CoS{sub 2}. This mechanism, however, cannot be applied to monosulfide (e.g., FeS) cells because the soluble polysulfide formation occurs at a much higher positive potential than the operational potential range of the monosulfide active material. For lithium-alloy/monosulfide cells, use of a controlled self-discharge process by the dissolved lithium as a means of chemical overcharge protection, has been developed and described in this article. The controlled self-discharge process, however, is not limited to the monosulfide cells. Because the protecting action is based on the negative electrode, this process is equally applicable to the mono- and disulfide cells. For the present experiments monosulfide cells were chosen to study the involved processes free from any interference of the polysulfide mechanisms.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6977973
• Journal Information: Journal of the Electrochemical Society; (USA), Journal Name: Journal of the Electrochemical Society; (USA) Vol. 136:7; ISSN JESOA; ISSN 0013-4651
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250901* -- Energy Storage-- Batteries-- Design & Development
250903 -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
ALLOYS
ALUMINIUM ALLOYS
BATTERY CHARGING
CHALCOGENIDES
COBALT COMPOUNDS
COBALT SULFIDES
DESIGN
DISULFIDES
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTRODES
IRON COMPOUNDS
IRON SULFIDES
LITHIUM-CHLORINE BATTERIES
LITHIUM-SULFUR BATTERIES
MATERIALS
MATERIALS TESTING
MATRIX MATERIALS
METAL-GAS BATTERIES
METAL-NONMETAL BATTERIES
NICKEL COMPOUNDS
NICKEL SULFIDES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OVERCURRENT
PERFORMANCE
SILICON ALLOYS
SULFIDES
SULFUR COMPOUNDS
TESTING
TRANSITION ELEMENT COMPOUNDS