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Solid composite electrolytes for lithium batteries

United States Patent

6,190,806
February 20, 2001
View the Complete Patent at the US Patent & Trademark Office
Solid composite electrolytes are provided for use in lithium batteries which exhibit moderate to high ionic conductivity at ambient temperatures and low activation energies. In one embodiment, a polymer-ceramic composite electrolyte containing poly(ethylene oxide), lithium tetrafluoroborate and titanium dioxide is provided in the form of an annealed film having a room temperature conductivity of from 10.sup.-5 S cm.sup.-1 to 10.sup.-3 S cm.sup.-1 and an activation energy of about 0.5 eV.
Kumar; Binod (Dayton, OH), Scanlon, Jr.; Lawrence G. (Fairborn, OH)
The University of Dayton (Dayton, OH)
09/ 605,179
June 28, 2000
GOVERNMENT RIGHTS The Government has rights in this invention pursuant to Contract No. F33615-93-C-2350 awarded by the United States Air Force Department of Energy.