US 12,230,798 B2
Compositions and methods for silicon containing dry anode films
Joon Ho Shin, San Diego, CA (US); Haim Feigenbaum, Irvine, CA (US); and Hieu Minh Duong, Rosemead, CA (US)
Assigned to Tesla, Inc., Austin, TX (US)
Appl. No. 17/048,974
Filed by Tesla, Inc., Austin, TX (US)
PCT Filed Apr. 30, 2019, PCT No. PCT/US2019/029898
§ 371(c)(1), (2) Date Oct. 19, 2020,
PCT Pub. No. WO2019/213068, PCT Pub. Date Nov. 7, 2019.
Claims priority of provisional application 62/666,037, filed on May 2, 2018.
Prior Publication US 2021/0249657 A1, Aug. 12, 2021
Int. Cl. H01M 4/583 (2010.01); H01M 4/04 (2006.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/583 (2013.01) [H01M 4/0435 (2013.01); H01M 4/366 (2013.01); H01M 4/386 (2013.01); H01M 4/623 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A dry electrode film of an energy storage device, comprising:
a dry active material comprising a Group 14 active material and a graphite active material; and
a dry binder, wherein the dry electrode film is free-standing,
wherein the graphite active material comprises primary graphite (PG) particles and secondary graphite (SG) particles distinct from the PG particles.