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Lithium ion conducting ionic electrolytes

United States Patent

*** EXPIRED ***
5,484,670
January 16, 1996
View the Complete Patent at the US Patent & Trademark Office
Lithium Ion Conducting Ionic Electrolytes
A liquid, predominantly lithium-conducting, ionic electrolyte is described which has exceptionally high conductivity at temperatures of 100.degree. C. or lower, including room temperature. It comprises molten lithium salts or salt mixtures in which a small amount of an anionic polymer lithium salt is dissolved to stabilize the liquid against recrystallization. Further, a liquid ionic electrolyte which has been rubberized by addition of an extra proportion of anionic polymer, and which has good chemical and electrochemical stability, is described. This presents an attractive alternative to conventional salt-in-polymer electrolytes which are not cationic conductors.
Angell; C. Austen (Mesa, AZ), Xu; Kang (Tempe, AZ), Liu; Changle (Tulsa, OK)
Arizona Board of Regents, a body corporate of the state of Arizona, (Tempe, AZ)
08/ 262,158
June 20, 1994
This invention was made with the assistance of United States Department of Energy (DOE) grant number DE-FG02-89ER4535398. The United States Government may have certain rights in this invention.