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Current collectors for improved safety

United States Patent

December 19, 2017
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
A battery electrode assembly includes a current collector with conduction barrier regions having a conductive state in which electrical conductivity through the conduction barrier region is permitted, and a safety state in which electrical conductivity through the conduction barrier regions is reduced. The conduction barrier regions change from the conductive state to the safety state when the current collector receives a short-threatening event. An electrode material can be connected to the current collector. The conduction barrier regions can define electrical isolation subregions. A battery is also disclosed, and methods for making the electrode assembly, methods for making a battery, and methods for operating a battery.
Abdelmalak; Michael Naguib (Knoxville, TN), Allu; Srikanth (Oak Ridge, TN), Dudney; Nancy J. (Knoxville, TN), Li; Jianlin (Knoxville, TN), Simunovic; Srdjan (Knoxville, TN), Wang; Hsin (Knoxville, TN)
14/ 955,366
December 1, 2015
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH This invention was made with government support under contract No. DE-AC05-00OR22725 awarded by the U.S. Department of Energy. The government has certain rights in this invention.