Ut-battelle, Inc.

Srikanth Allu

Hsin Wang

Nancy Johnston Dudney

Jianlin Li

Michael Naguib Abdelmalak

Srdjan Simunovic

Keith Douglas Kepler

Sreekanth Pannala

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.

Current collectors for improved safety

A lithium ion battery includes a cathode in electrical and thermal connection with a cathode current collector. The cathode current collector has an electrode tab. A separator is provided. An anode is in electrical and thermal connection with an anode current collector. The anode current collector has an electrode tab. At least one of the cathode current collector and the anode current collector comprises a thermal tab for heat transfer with the at least one current collector. The thermal tab is separated from the electrode tab. A method of operating a battery is also disclosed.

Thermal management for high-capacity large format Li-ion batteries

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Oak Ridge, TN, United States of America

Srikanth Allu