US 11,949,089 B2
Compositions and methods for prelithiating energy storage devices
Ziying Wang, San Diego, CA (US); and Hieu Minh Duong, Rosemead, CA (US)
Assigned to Tesla, Inc., Austin, TX (US)
Filed by Tesla, Inc., Austin, TX (US)
Filed on Jan. 14, 2020, as Appl. No. 16/742,021.
Claims priority of provisional application 62/792,544, filed on Jan. 15, 2019.
Prior Publication US 2020/0227723 A1, Jul. 16, 2020
Int. Cl. H01M 4/04 (2006.01); H01M 4/13 (2010.01); H01M 4/139 (2010.01); 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 4/0445 (2013.01) [H01M 4/0435 (2013.01); H01M 4/139 (2013.01); H01M 4/362 (2013.01); H01M 4/38 (2013.01); H01M 4/625 (2013.01); H01M 10/0525 (2013.01); H01M 2004/028 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A dry electrode film of an energy storage device, comprising:
a dry active material;
a dry binder; and
a dry prelithiating material distributed throughout the dry active material and the dry binder, wherein the dry prelithiating material does not comprise elemental lithium metal;
wherein the dry electrode film is free-standing and is substantially free of solvent residues, and
wherein the dry prelithiating material comprises about 0.5-10 wt. % of the dry electrode film.