US 11,837,712 B2
Anode electrode composition of Li-ion battery cell
Gleb Yushin, Atlanta, GA (US); Laura Gerber, Oakland, CA (US); Adam Kajdos, Alameda, CA (US); Justin Yen, Alameda, CA (US); Justin Doane, Alameda, CA (US); and Jens Steiger, Alameda, CA (US)
Assigned to SILA NANOTECHNOLOGIES, INC., Alameda, CA (US)
Filed by Sila Nanotechnologies, Inc., Alameda, CA (US)
Filed on Jan. 13, 2023, as Appl. No. 18/154,301.
Application 18/154,301 is a continuation of application No. 16/164,704, filed on Oct. 18, 2018, granted, now 11,581,523.
Claims priority of provisional application 62/574,654, filed on Oct. 19, 2017.
Prior Publication US 2023/0178711 A1, Jun. 8, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/134 (2010.01); H01M 10/0525 (2010.01); H01M 4/74 (2006.01); H01M 4/66 (2006.01); H01M 4/02 (2006.01); H01M 4/38 (2006.01); H01M 4/62 (2006.01); H01M 10/052 (2010.01)
CPC H01M 4/134 (2013.01) [H01M 4/386 (2013.01); H01M 4/622 (2013.01); H01M 4/625 (2013.01); H01M 4/661 (2013.01); H01M 4/742 (2013.01); H01M 10/052 (2013.01); H01M 10/0525 (2013.01); H01M 2004/027 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An anode electrode for a Li-ion battery cell, comprising:
a metal current collector; and
an electrode coating,
wherein the electrode coating:
(1) comprises Si-comprising active material particles that exhibit an average particle size in the range from about 0.2 microns to about 10 microns and exhibit a volume expansion in the range of about 8 vol. % to about 180 vol. % during one or more charge-discharge cycles of the Li-ion battery cell,
(2) exhibits an areal capacity loading in the range of about 3 mAh/cm2 to about 12 mAh/cm2,
(3) comprises conductive additive material particles, and
(4) comprises a polymer binder that is configured to bind the Si-comprising active material particles and the conductive additive material particles together to stabilize the anode electrode against the volume expansion during the one or more charge-discharge cycles of the Li-ion battery cell while maintaining an electrical connection between the metal current collector and the Si-comprising active material particles.