Lithium-ion battery
AssigneeMedtronic, Inc.
InventorsWilliam G. Howard, Craig L. Schmidt, Erik R. Scott
Life of this patent
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Abstract
A lithium-ion battery includes a positive electrode that includes a positive current collector, a first active material, and a second active material. The lithium-ion battery also includes a negative electrode comprising a negative current collector, a third active material, and a quantity of lithium in electrical contact with the negative current collector. The first active material, second active material, and third active materials are configured to allow doping and undoping of lithium ions, and the second active material exhibits charging and discharging capacity below a corrosion potential of the negative current collector and above a decomposition potential of the first active material.
Claims55
A lithium-ion battery comprising:
- a positive electrode comprising
- a positive current collector,
- a first active material, and
- a second active material;
- and
- a negative electrode comprising
- a negative current collector,
- a third active material, and
- a quantity of lithium in electrical contact with the negative current collector;
- wherein the first active material, second active material, and third active materials are configured to allow doping and undoping of lithium ions;
- and
- wherein the quantity of lithium provides electrochemically cyclable lithium for the second active material of the positive electrode to allow the second active material to exhibit charging and discharging capacity below a corrosion potential of the negative current collector and above a decomposition potential of the first active material.
A lithium-ion battery comprising:
- a positive electrode comprising
- a positive current collector,
- a first active material, and
- a second active material;
- a negative electrode comprising
- a negative current collector,
- a third active material, and
- a quantity of lithium provided in the form of a lithium patch in electrical contact with the negative current collector;
- wherein the first active material, second active material, and third active materials are configured to allow doping and undoping of lithium ions;
- and
- wherein the quantity of lithium provides electrochemically cyclable lithium for the second active material of the positive electrode to allow the second active material to exhibit charging and discharging capacity below a corrosion potential of the negative current collector and above a decomposition potential of the first active material.
Dependencies are inferred from the claim text.