	US 12,347,849 B2
	Multi-layer coating using immiscible solvent slurries
Patrick Pietrasz, Ann Arbor, MI (US); Eunsung Lee, Novi, MI (US); Gunho Kwak, Novi, MI (US); Feng Li, Troy, MI (US); and Chi Paik, Grosse Ile, MI (US)
Assigned to Ford Global Technologies, LLC, Dearborn, MI (US)
Filed by Ford Global Technologies, LLC, Dearborn, MI (US)
Filed on Feb. 15, 2022, as Appl. No. 17/672,164.
Prior Publication US 2023/0261176 A1, Aug. 17, 2023
Int. Cl. H01M 4/36 (2006.01); H01M 4/04 (2006.01); H01M 4/1393 (2010.01); H01M 4/1395 (2010.01); H01M 4/46 (2006.01); H01M 4/583 (2010.01)

CPC H01M 4/366 (2013.01) [H01M 4/0402 (2013.01); H01M 4/1393 (2013.01); H01M 4/1395 (2013.01); H01M 4/466 (2013.01); H01M 4/583 (2013.01)]

20 Claims

1. A method for producing a multi-layer coating on a substrate for an anode or cathode, the method comprising:

preparing a first mixture comprising a first solvent and a first active material;

preparing a second mixture comprising a second solvent and a second active material;

combining the first mixture and the second mixture to form a slurry; and

coating the substrate with the slurry, wherein the first solvent and the second solvent are immiscible.

8. A method for coating a substrate for an anode or a cathode of a lithium-ion battery, the method comprising:

preparing an aqueous-based mixture comprising a first active material;

preparing an oil-based or hydrocarbon-based mixture comprising a second active material;

combining the aqueous-based mixture and the oil-based or hydrocarbon-based mixture to form a slurry; and

coating the substrate with the slurry.

16. A method for coating a substrate for an anode or a cathode of a lithium-ion battery, the method comprising:

combining a plurality of immiscible solvents, wherein a first solvent comprises a first active material and a second solvent comprises a second active material; and

coating the substrate with the plurality of immiscible solvents.