Medical device having lithium-ion battery
First Claim
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1. A medical device comprising:
- a rechargeable lithium-ion battery for providing power to the medical device, the lithium-ion battery comprising;
a positive electrode comprising a current collector and a first active material; and
a negative electrode comprising a current collector, a first layer comprising a second active material, and a second layer separate and different from the first layer comprising a third active material, the second active material comprising a lithium titanate material and the third active material selected from the group consisting of LiMn2O4, LixVO2 where x is between approximately 0 and 1, LiMxMn(2-x)O4 (where M is a metal and x is between approximately 0.05 and 0.4), V6O13, V2O5, V3O8, MoO3, TiS2, WO2, MoO2, RuO2, and combinations thereof;
wherein the third active material exhibits charging and discharging capacity below a corrosion potential of the current collector of the negative electrode and above a decomposition potential of the first active material.
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Abstract
A medical device includes a rechargeable lithium-ion battery for providing power to the medical device. The lithium-ion battery includes a positive electrode comprising a current collector and a first active material and a negative electrode comprising a current collector, a second active material, and a third active material. The first active material, second active material, and third active material are configured to allow doping and undoping of lithium ions. The third active material exhibits charging and discharging capacity below a corrosion potential of the current collector of the negative electrode and above a decomposition potential of the first active material.
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Citations
57 Claims
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1. A medical device comprising:
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a rechargeable lithium-ion battery for providing power to the medical device, the lithium-ion battery comprising; a positive electrode comprising a current collector and a first active material; and a negative electrode comprising a current collector, a first layer comprising a second active material, and a second layer separate and different from the first layer comprising a third active material, the second active material comprising a lithium titanate material and the third active material selected from the group consisting of LiMn2O4, LixVO2 where x is between approximately 0 and 1, LiMxMn(2-x)O4 (where M is a metal and x is between approximately 0.05 and 0.4), V6O13, V2O5, V3O8, MoO3, TiS2, WO2, MoO2, RuO2, and combinations thereof; wherein the third active material exhibits charging and discharging capacity below a corrosion potential of the current collector of the negative electrode and above a decomposition potential of the first active material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 55)
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27. A medical device comprising:
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a rechargeable lithium-ion battery comprising a positive electrode and a negative electrode, the positive electrode comprising a first active material and the negative electrode comprising a second active material in a first layer and a third active material in a second layer separate and different from the first layer; wherein the second active material comprises a lithium titanate material; wherein the third active material exhibits charging and discharging capacity below a corrosion potential of the current collector of the negative electrode and above a decomposition potential of the first active material; and wherein the battery has a zero voltage crossing potential between the positive and negative electrodes that is below the corrosion potential of the current collector of the negative electrode and above the decomposition potential of the first active material. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 56)
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42. A medical device comprising:
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a rechargeable lithium-ion battery comprising a positive electrode and a negative electrode, the positive electrode comprising a first active material and the negative electrode comprising a first layer comprising a second active material and a separate and different second layer comprising a third active material; wherein the second active material comprises Li4Ti5O12 and the third active material comprises at least one material selected from the group consisting of LiMn2O4, LixVO2, LiMxMn(2-x)O4 (where M is a metal and x is between approximately 0.05 and 0.4), V6O13, V2O5, V3O8, MoO3, TiS2, WO2, MoO2, RuO2, and combinations thereof. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 57)
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Specification