The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 15, 1987
Filed:
Mar. 31, 1987
Applicant:
Inventor:
Ulrich von Alpen, Glashutten, DE;
Assignee:
Varta Batterie A.G., Hanover, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429194 ; 429197 ;
Abstract
In galvanic high-energy cells with negative light-metal electrodes (e.g., Li) and electrolyte component solvents including ether with a CH bond activated by the neighboring groups --O--, .dbd.CO or .dbd.N, the formation of explosive peroxides is inhibited by adding stabilizer substances to the electrolyte in amounts of about 100 ppm. These stabilizer substances can include alkyl-substituted phenols, especially 2,6-di-tert-butyl-4-methylphenol, and readily oxidizable organosulfur and organophosphorus compounds such as trimethylphosphite. This permits safe handling of the cells, even under unusual operating conditions (e.g., prolonged overcharging at high current).