BIOBATTERY WITH NANOCRYSTALLINE MATERIAL ANODE
First Claim
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1. A method for making an implantable bioelectric battery comprising the steps of:
- forming an anode electrode from a starting magnesium material, wherein the starting magnesium material is treated to form a final magnesium material, wherein during the step of treating the average grain size of the starting magnesium material is reduced to a grain size of from about 50 to 2500 nanometers; and
placing a cathode electrode adjacent the anode electrode, wherein the anode electrode and cathode electrode are separated from one another by an insulating member.
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Abstract
A bioelectric battery used to power an implantable device comprises an anode electrode and a cathode electrode separated by an insulating member. The anode is formed from a nanocrystalline or ultra fine grain sized magnesium alloy. The magnesium alloy can be formed by subjecting a starting magnesium alloy to one or more plastic deformation treatments to reduce grain size and improve uniform material distribution, thereby reducing corrosion loss and improving service life.
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Citations
14 Claims
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1. A method for making an implantable bioelectric battery comprising the steps of:
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forming an anode electrode from a starting magnesium material, wherein the starting magnesium material is treated to form a final magnesium material, wherein during the step of treating the average grain size of the starting magnesium material is reduced to a grain size of from about 50 to 2500 nanometers; and placing a cathode electrode adjacent the anode electrode, wherein the anode electrode and cathode electrode are separated from one another by an insulating member. - View Dependent Claims (2, 3, 4, 5)
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6. A method for making an implantable bioelectric battery comprising the steps of:
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forming an anode electrode from a starting magnesium material, wherein the starting magnesium alloy material has a starting average grain size and is treated by plastic deformation to form a final magnesium material having a final average grain size that is less than the starting average grain size by at least an order or magnitude; and placing a cathode electrode adjacent the anode electrode, wherein the anode electrode and cathode electrode are separated from one another by an insulating member. - View Dependent Claims (7, 8, 9)
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10. An implantable power supply comprising:
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a bioelectric battery for implantation into a living body, the battery including an anode electrode and a cathode electrode, and further including an insulating member separating the anode electrode from the cathode electrode; wherein the anode electrode is formed from a magnesium material having an average grain size in the range of from about 50 to 2500 nanometers. - View Dependent Claims (11, 12, 13, 14)
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Specification