ANODES FOR LITHIUM-ION DEVICES
First Claim
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1. An anode material for a lithium ion device, comprising:
- an active material comprising silicon and boron, wherein the weight percentage of the silicon is between about 4 to about 35 weight % of the total weight of the anode material and the weight percentage of the boron is between about 2 to about 20 weight % of the total weight of the anode material.
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Abstract
An anode material for a lithium ion device includes an active material including silicon and boron. The weight percentage of the silicon is between about 4 to 35 weight % of the total weight of the anode material and the weight percentage of the boron is between about 2 to 20 weight % of the total weight of the anode material. The active material may include carbon at a weight percentage of between between 5 to about 60 weight % of the total weight of the anode material. Additional materials, methods of making and devices are taught.
35 Citations
28 Claims
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1. An anode material for a lithium ion device, comprising:
an active material comprising silicon and boron, wherein the weight percentage of the silicon is between about 4 to about 35 weight % of the total weight of the anode material and the weight percentage of the boron is between about 2 to about 20 weight % of the total weight of the anode material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An active material for a producing anode for lithium ion devices, the active material, comprising:
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silicon at a weight percentage of between 5 to about 47 weight % of the total weight of the active material; and boron at a weight percentage of between about 3 to about 25 weight % of the total weight of the active material. - View Dependent Claims (11, 15)
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12. A lithium ion device comprising:
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an anode having an active material comprising silicon and boron, wherein the weight percentage of the silicon is between about 4 to about 35 weight % of the total weight of the anode and the weight percentage of the boron is between about 2 to about 20 weight % of the total weight of the anode; a cathode; and an electrolyte. - View Dependent Claims (13, 14, 16, 17, 18, 19, 20)
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21. A method for making an anode material for a lithium ion device, comprising:
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forming an alloy from silicon powder, carbon, and a boron-containing compound to form an active material, and adding the active material to a matrix to form the anode material; wherein the weight percentage of the silicon is between about 4 to about 35 weight % of the total weight of the anode material and the weight percentage of the boron is between about 2 to about 20 weight % of the total weight of the anode material. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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Specification