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US 2019/0379042 A1Published application
Nanocomposite silicon electrode and method
AssigneeThe Regents of the University of California
InventorsCengiz S. Ozkan, Mihrimah Ozkan, Wei Wang
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Abstract
A silicon based micro-structured material and methods are shown. In one example, the silicon based micro-structured material includes a carbon coating. In one example, the silicon based micro-structured material is used as an electrode in a battery, such as a lithium ion battery.
Claims19
A battery, comprising:
- a first electrode, including:
- a number of porous silicon spheres;
- a carbon coating covering a surface portion of the porous silicon spheres;
- a second electrode;
- and
- an electrolyte in contact with both the first electrode and the second electrode.
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A method of forming a battery electrode, comprising:
- mixing silicon oxide spheres and sodium chloride;
- adding a reducing agent;
- reducing the silicon oxide spheres and sodium chloride mixture to form silicon spheres;
- etching the reduced silicon spheres to form a porous silicon sphere;
- and
- forming a carbon coating over a surface of the porous silicon sphere.
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A method of forming a battery electrode, comprising:
- mixing silicon oxide nanoparticles and sodium chloride;
- adding a reducing agent;
- reducing the silicon oxide nanoparticles and sodium chloride mixture to form silicon nanoparticles in substantially the same geometry as the silicon oxide nanoparticles;
- etching the silicon nanoparticles to form porous silicon nanoparticles;
- and
- forming a carbon coating over a surface of the porous silicon nanoparticles.
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Dependencies are inferred from the claim text.