US 11,742,474 B2
Electrodes with silicon oxide active materials for lithium ion cells achieving high capacity, high energy density and long cycle life performance
Subramanian Venkatachalam, Pleasonton, CA (US); Sanjeev Sharma, Fremont, CA (US); Xianyu Iris Li, Mountain View, CA (US); Pedro A. Hernandez-Gallegos, Pleasonton, CA (US); Charan Masarapu, Fremont, CA (US); Sujeet Kumar, Newark, CA (US); and Herman A. Lopez, Sunnyvale, CA (US)
Assigned to Zenlabs Energy, Inc., Fremont, CA (US)
Filed by Zenlabs Energy, Inc., Fremont, CA (US)
Filed on Jul. 8, 2021, as Appl. No. 17/370,678.
Application 17/370,678 is a division of application No. 15/948,160, filed on Apr. 9, 2018, granted, now 11,094,925.
Claims priority of provisional application 62/609,930, filed on Dec. 22, 2017.
Prior Publication US 2021/0336251 A1, Oct. 28, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/36 (2006.01); H01M 10/0525 (2010.01); H01M 4/587 (2010.01); H01M 4/62 (2006.01); H01M 4/38 (2006.01); H01M 4/133 (2010.01); H01M 4/134 (2010.01); H01M 4/48 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/131 (2010.01)
CPC H01M 4/364 (2013.01) [H01M 4/131 (2013.01); H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/386 (2013.01); H01M 4/483 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/587 (2013.01); H01M 4/622 (2013.01); H01M 4/623 (2013.01); H01M 4/625 (2013.01); H01M 10/0525 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A negative electrode for a lithium ion cell comprising from about 78 wt % to about 92 wt % an active material, from about 1 wt % to about 7 wt % nanoscale conductive carbon and from about 6 wt % to about 20 wt % polymer binder, wherein the polymer binder comprises at least about 50 wt % polyimide and at least about 5 wt % of a distinct second polymer binder with an elastic modulus of no more than about 2.4 GPa.