Overdischarge protection in high-temperature cells and batteries
Abstract
Overdischarge indication and protection is provided in a lithium alloy metal sulfide, secondary electrochemical cell and batteries of such cells through use of a low lithium activity phase that ordinarily is not matched with positive electrode material. Low lithium activity phases such as Li[sub 0.1]Al[sub 0.9] and LiAlSi in correspondence with positive electrode material cause a downward gradient in cell voltage as an indication of overdischarge prior to damage to the cell. Moreover, the low lithium activity phase contributes lithium into the electrolyte and provides a lithium shuttling current as overdischarge protection after all of the positive electrode material is discharged. 8 figs.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 7022958
- Patent Number(s):
- 4935316
- Application Number:
- PPN: US 7-384604
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 25 Jul 1989
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; BATTERY CHARGE STATE; MONITORING; EQUIPMENT PROTECTION DEVICES; DESIGN; METAL-NONMETAL BATTERIES; ACTIVATION ENERGY; ALUMINIUM ALLOYS; INTERMETALLIC COMPOUNDS; LITHIUM ALLOYS; PHASE STUDIES; SILICON ALLOYS; VOLTAGE DROP; ALLOYS; ELECTRIC BATTERIES; ELECTROCHEMICAL CELLS; ENERGY; 250903* - Energy Storage- Batteries- Materials, Components, & Auxiliaries
Citation Formats
Redey, L. Overdischarge protection in high-temperature cells and batteries. United States: N. p., 1990.
Web.
Redey, L. Overdischarge protection in high-temperature cells and batteries. United States.
Redey, L. Tue .
"Overdischarge protection in high-temperature cells and batteries". United States.
@article{osti_7022958,
title = {Overdischarge protection in high-temperature cells and batteries},
author = {Redey, L},
abstractNote = {Overdischarge indication and protection is provided in a lithium alloy metal sulfide, secondary electrochemical cell and batteries of such cells through use of a low lithium activity phase that ordinarily is not matched with positive electrode material. Low lithium activity phases such as Li[sub 0.1]Al[sub 0.9] and LiAlSi in correspondence with positive electrode material cause a downward gradient in cell voltage as an indication of overdischarge prior to damage to the cell. Moreover, the low lithium activity phase contributes lithium into the electrolyte and provides a lithium shuttling current as overdischarge protection after all of the positive electrode material is discharged. 8 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {6}
}
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