US 11,942,630 B2
Nano-featured porous silicon materials
Aaron M. Feaver, Seattle, WA (US); Leah A. Thompkins, Seattle, WA (US); Katharine Geramita, Seattle, WA (US); Benjamin E. Kron, Seattle, WA (US); Avery J. Sakshaug, Everett, WA (US); Sarah Fredrick, Denver, CO (US); Henry R. Costantino, Woodinville, WA (US); Chad Goodwin, Seattle, WA (US); Christopher Timmons, Monroe, WA (US); Farshid Afkhami, Lake Stevens, WA (US); and Adam Strong, Lake Forest Park, WA (US)
Assigned to Group14 Technologies, Inc., Woodinville, WA (US)
Filed by Group14 Technologies, Inc., Woodinville, WA (US)
Filed on Jul. 22, 2020, as Appl. No. 16/936,126.
Application 16/936,126 is a division of application No. 15/752,566, granted, now 10,763,501, previously published as PCT/US2016/046882, filed on Aug. 12, 2016.
Claims priority of provisional application 62/271,799, filed on Dec. 28, 2015.
Claims priority of provisional application 62/271,795, filed on Dec. 28, 2015.
Claims priority of provisional application 62/209,651, filed on Aug. 25, 2015.
Claims priority of provisional application 62/208,357, filed on Aug. 21, 2015.
Claims priority of provisional application 62/205,542, filed on Aug. 14, 2015.
Prior Publication US 2021/0175498 A1, Jun. 10, 2021
Int. Cl. H01M 4/38 (2006.01); C01B 33/021 (2006.01); C23F 1/00 (2006.01); H01M 4/36 (2006.01); H01M 4/587 (2010.01); H01M 8/1037 (2016.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/386 (2013.01) [C01B 33/021 (2013.01); C23F 1/00 (2013.01); H01M 4/366 (2013.01); H01M 4/587 (2013.01); H01M 8/1037 (2013.01); H01M 10/0525 (2013.01); C01P 2002/72 (2013.01); C01P 2002/85 (2013.01); C01P 2004/03 (2013.01); C01P 2006/10 (2013.01); C01P 2006/11 (2013.01); C01P 2006/12 (2013.01); C01P 2006/14 (2013.01); C01P 2006/16 (2013.01); C01P 2006/17 (2013.01); C01P 2006/21 (2013.01); C01P 2006/40 (2013.01); C01P 2006/80 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A nano-featured porous silicon material comprising:
i) a skeletal density less than 2.2 g/cm3 as measured by helium pycnometry;
ii) a specific surface area between 30 m2/g and 230 m2/g; and
iii) a pore volume between 0.1 cm3/g and 0.5 cm3/g,
wherein:
an oxygen content of the porous silicon material is less than 30%; and
the porous silicon material comprises micropores, mesopores and macropores, such that the macropores comprise 10% to 90% of the pore volume.