US 12,291,457 B2
Porous silicon material and method of manufacture
Robert C. Ionescu, San Jose, CA (US); and Chueh Liu, San Jose, CA (US)
Assigned to ionobell, Inc., San Jose, CA (US)
Filed by ionobell, Inc., San Jose, CA (US)
Filed on Mar. 4, 2024, as Appl. No. 18/594,949.
Application 18/594,949 is a division of application No. 18/080,497, filed on Dec. 13, 2022, granted, now 11,945,726.
Claims priority of provisional application 63/288,831, filed on Dec. 13, 2021.
Prior Publication US 2024/0246827 A1, Jul. 25, 2024
Int. Cl. C01B 33/025 (2006.01); B22F 9/04 (2006.01); C01B 33/02 (2006.01); C01B 33/021 (2006.01); C01B 33/023 (2006.01); C23F 1/44 (2006.01); H01M 4/38 (2006.01); B82Y 30/00 (2011.01); C23F 1/00 (2006.01)
CPC C01B 33/025 (2013.01) [B22F 9/04 (2013.01); C01B 33/02 (2013.01); C01B 33/021 (2013.01); C01B 33/023 (2013.01); C23F 1/44 (2013.01); H01M 4/386 (2013.01); B22F 2009/043 (2013.01); B82Y 30/00 (2013.01); C01P 2004/61 (2013.01); C01P 2006/16 (2013.01); C23F 1/00 (2013.01); Y02E 60/10 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for manufacturing a silicon material comprising:
forming a composite comprising silicon, carbon, and at least one sacrificial material;
etching the composite to remove the at least one sacrificial material; and
washing the etched composite to remove byproducts formed during etching the composite;
wherein, after washing, the silicon material comprises between 1-5% carbon by mass, at least 80% silicon by mass, and a porosity between 10-50% by volume.