Overcharge Protection in Ambient Temperature Lithium and Lithium-Ion Cells: A Literature Survey
Abstract
This report summarizes a survey of the literature on in situ electrochemical methods to provide overcharge protection in ambient temperature lithium and lithium-ion cells. Among the various rechargeable lithium battery systems, only the lithium cells using solutions of inorganic salts such as LiAlCl4 or LiGaCl4 in sulfur dioxide as electrolytes were found to have inherent overcharge protection. For low-voltage lithium cells such as lithium/titanium disulfide, the survey identified a number of electrolyte additives that undergo oxidation above the charging potentials but below the solvent oxidation potential and can provide overcharge protection in these cells. The oxidized form of the additive then reacts with lithium to regenerate the original electrolyte additive. However, no suitable electrochemical method was identified for providing overcharge protection in lithium or lithium-ion cells that require charging to potentials above approx. 4 V.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1998
- Accession Number
- ADA359152
Entities
People
- Wishvender K. Behl
Organizations
- United States Army Research Laboratory