Method of Making Silicon Anode Material for Rechargeable Cells
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Abstract
There is provided a method of forming silicon anode material for rechargeable cells. The method includes providing a metal matrix, comprising no more than 30 wt % silicon, including silicon structures dispersed therein. The method further includes at least partially etching the metal matrix to at least partially isolate the silicon structures.
4 Citations
49 Claims
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1-25. -25. (canceled)
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26. An electroactive material comprising silicon structures that have been at least partially isolated from a solidified metal silicon alloy comprising no more than 30 wt % silicon, wherein the silicon structures comprise silicon-comprising structural elements, wherein the structural elements have a minor dimension of less than 2 μ
- m and a length of greater than 5 times the minor dimension.
- View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. An electroactive material, made by a method which comprises:
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providing a metal matrix, comprising no more than 30 wt % silicon, including silicon structures dispersed therein, and at least partially etching the metal matrix to at least partially isolate the silicon structures.
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43. An electroactive material, comprising silicon structures that comprise silicon-comprising structural elements having a minor dimension of less than 2 μ
- m and a length of greater than 5 times the minor dimension, and which further comprises residual metal.
- View Dependent Claims (44, 45, 46, 47, 48, 49)
Specification