ELECTROLYTES WITH LITHIUM DIFLUORO(OXALATO)BORATE AND LITHIUM TETRAFLUOROBORATE SALTS FOR LITHIUM METAL AND ANODE-FREE CELLS

摘要

Provided are electrolyte solutions including both lithium difluoro(oxalato)borate and lithium tetrafluoroborate and a solvent component for use in lithium metal or anode-free rechargeable battery cell and methods of using the electrolyte solutions to improve capacity retention of the battery cells. Also provided are rechargeable battery systems including a lithium metal or anode-free battery cell and electrolyte solutions including both lithium difluoro(oxalato)borate and lithium tetrafluoroborate and a solvent component. The systems described herein exhibit improved capacity retention.