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US 11,905,421 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.
Claims12
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.
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;
- and
- cold welding the plurality of porous silicon nanoparticles into an aggregated silicon particle by ball milling the plurality of porous silicon nanoparticles for between 10 minutes and 6 hours at a milling speed between 500 and 1500 rpm, wherein the aggregated silicon particle comprises a characteristic size between about 1 μm and 10 μm, wherein a porous silicon nanoparticle of the porous silicon nanoparticles comprises a polyhedral morphology, wherein the plurality of porous silicon nanoparticles are ball milled in a ball mill wherein walls of the ball mall are cooled using liquid nitrogen.
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;
- and
- cold welding the plurality of porous silicon nanoparticles into an aggregated silicon particle by ball milling the plurality of porous silicon nanoparticles for between 10 minutes and 6 hours at a milling speed between 500 and 1500 rpm, wherein the aggregated silicon particle comprises a characteristic size between about 1 μm and 10 μm, wherein a porous silicon nanoparticle of the porous silicon nanoparticles comprises a polyhedral morphology.
Dependencies are inferred from the claim text.