Lithium ion batteries and methods of sterilization
AssigneeMedtronic, Inc.
InventorsLaura E. McCalla, Gaurav Jain
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Abstract
A lithium ion battery is provided that includes: a positive electrode; a negative electrode; a separator comprising a material having a melt temperature of greater than 150° C.; and an electrolyte including an organic solvent and a lithium salt. A method for sterilizing a lithium ion battery is also provided that includes: providing a lithium ion battery (particularly one as described herein); either charging or discharging the battery to a state of charge (SOC) of 20% to 100%; and steam sterilizing the battery to form a sterilized lithium ion battery.
Claims21
1-20. (canceled)
A lithium ion battery comprising:
- a positive electrode comprising:
- a positive current collector comprising aluminum;
- positive electrode material comprising:
- a lithium-containing metal oxide;
- a binder;
- and
- conductive carbon;
- a negative electrode comprising:
- a negative current collector comprising copper, aluminum, titanium, or carbon;
- negative electrode material comprising a lithium titanium oxide, a carbon-containing material capable of intercalating lithium, a metal-alloy containing material capable of intercalating lithium, or a combination thereof;
- a binder;
- and
- conductive carbon;
- a separator;
- and
- an electrolyte comprising an organic solvent and lithium salt;
- wherein the lithium salt comprises lithium bis(trifluoromethanesulfonimide) (LiTFSI), lithium bis(oxalato)borate (LiBOB), and 1 mol-% to 25 mol-% lithium hexafluorophosphate (LiPF6).
A lithium ion battery comprising:
- a positive electrode comprising:
- a positive current collector;
- and
- positive electrode material comprising a lithium-containing metal oxide comprising one or more of cobalt, nickel, or aluminum;
- a negative electrode comprising:
- a negative current collector;
- a separator;
- and
- an electrolyte comprising an organic solvent and lithium salt,
- wherein the lithium salt comprises lithium bis(trifluoromethanesulfonimide) (LiTFSI), lithium bis(oxalato)borate (LiBOB), and 1 mol-% to 25 mol-% lithium hexafluorophosphate (LiPF6).
Dependencies are inferred from the claim text.