Systems and methods for enhanced dielectric properties for electrolytic capacitors
AssigneeCardiac Pacemakers, Inc.
InventorsGregory J. Sherwood, Michael J. Root, Mary M. Byron
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Abstract
This disclosure relates to methods and apparatus for enhanced dielectric properties for electrolytic capacitors to store energy in an implantable medical device. One aspect of the present subject matter includes a method for manufacturing a capacitor adapted to be disposed in an implantable device housing. An embodiment of the method includes providing a dielectric comprising aluminum oxide and doping the aluminum oxide with an oxide having a dielectric constant greater than aluminum oxide. Doping the aluminum oxide includes using sol-gel based chemistry, electrodeposition or atomic layer deposition (ALD) in various embodiments.
Claims20
A method for manufacturing a capacitor including a dielectric comprising aluminum oxide, the method comprising:
- using a vapor deposition process to dope the aluminum oxide with a plurality of metal oxides having a dielectric constant greater than aluminum oxide, wherein the doped aluminum oxide is distributed evenly throughout the entire thicknes, the dielectric, the dielectric in contact with an anode and a cathode and is configured to provide an increased energy storage capacity per volume for the capacitor.
A method for manufacturing a capacitor including a dielectric comprising aluminum oxide, the method comprising:
- using a chemical deposition process to dope the aluminum oxide with a plurality of metal oxides having a dielectric constant greater than aluminum oxide, wherein the plurality of oxides are integrated into the aluminum oxide, and wherein the doped aluminum oxide is distributed evenly throughout the entire thickness the dielectric, the dielectric in contact with an anode and a cathode and is configured to provide an increased energy storage capacity per volume for the capacitor.
A method for manufacturing a capacitor including a dielectric comprising aluminum oxide, the method comprising:
- using an electrodeposition process to dope the aluminum oxide with a plurality of metal oxides having a dielectric constant greater than aluminum oxide, wherein the doped aluminum oxide is distributed evenly throughout the entire thickness the dielectric, the dielectric in contact with an anode and a cathode and is configured to provide an increased energy storage capacity per volume for the capacitor.
Dependencies are inferred from the claim text.