US 11,990,278 B2
Compositions and methods for multilayer electrode films
Joon Ho Shin, 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 Oct. 31, 2018, as Appl. No. 16/176,420.
Claims priority of provisional application 62/580,956, filed on Nov. 2, 2017.
Prior Publication US 2019/0139714 A1, May 9, 2019
Int. Cl. H01G 11/26 (2013.01); H01G 11/04 (2013.01); H01G 11/28 (2013.01); H01G 11/38 (2013.01); H01G 11/50 (2013.01); H01G 11/86 (2013.01); H01M 4/04 (2006.01); H01M 4/136 (2010.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 10/04 (2006.01)
CPC H01G 11/86 (2013.01) [H01G 11/04 (2013.01); H01G 11/26 (2013.01); H01G 11/28 (2013.01); H01G 11/38 (2013.01); H01M 4/043 (2013.01); H01M 4/136 (2013.01); H01M 4/366 (2013.01); H01M 4/38 (2013.01); H01M 10/04 (2013.01); H01G 11/50 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A multilayer electrode film comprising:
a first active layer comprising a first active material and a first binder, wherein the first active layer is a self-supporting film, and wherein the first active material comprises a metal oxide or a metal sulfide; and
a second active layer comprising a second active material and a second binder, wherein the second active layer is a self-supporting film, and wherein the second active material comprises a metal oxide or a metal sulfide;
wherein the first and second active layers are stacked to form the multilayer electrode film;
wherein the multilayer electrode film is a free-standing film;
wherein the first and second active layers are substantially free of solvent residue;
wherein the multilayer electrode film has a thickness of at least 200 μm;
wherein the first active layer has a thickness of 120-250 μm and the second active layer has a thickness of 120-250 μm; and
wherein the first active layer is immediately adjacent to the second active layer.