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ELECTROACTIVE SEPARATOR FOR OVERCHARGE PROTECTION

United States Patent Application

20090176160
A1
View the Complete Application at the US Patent & Trademark Office
A separator for a battery that includes a first polymer to provide structural support and a second polymer mixed with the first polymer. The second polymer provides an open channel for ionic transport through the separator. The separator also includes a third polymer interspersed with the first polymer and the second polymer. The third polymer is an insulator when a potential in the battery is less than a switching voltage, and is a conductor when the potential in the battery is greater than the switching voltage.
Newman, Aron (Cambridge, MA)
12/ 133,598
June 5, 2008
GOVERNMENT SUPPORT [0002] The subject matter described herein was supported in part by the Department of Energy under Grant No. DE-FG02-05ER84249 and FA9300-05-M-3104. The U.S. Government may have certain rights in the technology.