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.
- Inventors:
-
- Downers Grove, IL
- Issue Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- OSTI Identifier:
- 867427
- Patent Number(s):
- 4935316
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- DOE Contract Number:
- W-31109-ENG-38
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- overdischarge; protection; high-temperature; cells; batteries; indication; provided; lithium; alloy; metal; sulfide; secondary; electrochemical; cell; activity; phase; ordinarily; matched; positive; electrode; material; phases; lialsi; correspondence; downward; gradient; voltage; prior; damage; moreover; contributes; electrolyte; provides; shuttling; current; discharged; cell voltage; metal sulfide; secondary electrochemical; positive electrode; electrochemical cell; electrode material; lithium alloy; high-temperature cells; charge prior; temperature cells; /429/
Citation Formats
Redey, Laszlo. Overdischarge protection in high-temperature cells and batteries. United States: N. p., 1990.
Web.
Redey, Laszlo. Overdischarge protection in high-temperature cells and batteries. United States.
Redey, Laszlo. Mon .
"Overdischarge protection in high-temperature cells and batteries". United States. https://www.osti.gov/servlets/purl/867427.
@article{osti_867427,
title = {Overdischarge protection in high-temperature cells and batteries},
author = {Redey, Laszlo},
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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 1990},
month = {Mon Jan 01 00:00:00 EST 1990}
}