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US 11,591,478 B2Granted
Silicon material and method of manufacture
Assigneeionobell, Inc.
InventorsRobert C. Ionescu, Chueh Liu
Life of this patent
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Abstract
A silicon material can include a silicon aggregate comprising a plurality of porous silicon nanoparticles welded together. The silicon aggregate can optionally have a polyhedral morphology. A method can include: receiving a plurality of porous silicon nanoparticles and cold welding the plurality of porous silicon nanoparticles into an aggregated silicon particle.
Claims22
A silicon material comprising
- a silicon aggregate comprising a plurality of porous silicon nanoparticles welded together, wherein the silicon aggregate comprises a substantially polyhedral morphology, wherein a characteristic size of the silicon aggregate is between about 1-10 μm, wherein the silicon aggregate comprises 1-10% by mass carbon, 1-5% by mass oxygen, and at least 50% by mass silicon.
A method for manufacturing a silicon material comprising:
- receiving a plurality of porous silicon nanoparticles with a characteristic size between about 2 and 100 nm;
- cold welding the plurality of porous silicon nanoparticles into an aggregated silicon particle, wherein the aggregated silicon particle comprises a characteristic size between about 1 μm and 10 μm;
- and
- contemporaneously with cold welding the plurality of porous silicon nanoparticles, carbon coating the plurality of porous silicon nanoparticles by milling the plurality of porous silicon nanoparticles and a polymer.
1 more element
A method for manufacturing a silicon material comprising:
- receiving a plurality of porous silicon nanoparticles with a characteristic size between about 2 and 100 nm, wherein the plurality of porous silicon nanoparticles are manufactured by reducing a fumed silica precursor in the presence of a metal reducing agent at a temperature between about 700° C. and 1000° C.;
- and
- cold welding the plurality of porous silicon nanoparticles into an aggregated silicon particle, wherein the aggregated silicon particle comprises a characteristic size between about 1 μm and 10 μm.
Dependencies are inferred from the claim text.